Details of the Researcher

PHOTO

Naokazu Shibata
Section
Graduate School of Science
Job title
Professor
Degree

  • 博士（理学）（東京理科大学）

  • 修士（理学）（東京理科大学）

Research History 6

  • 2021/04 - Present
    Tohoku University　Faculty of Science Department of Physics　Professor

  • 2005/04 - 2021/03
    Tohoku University

  • 1999/11 - 2005/03
    東京大学総合文化研究科　助手

  • 1999/04 - 1999/10
    筑波大学物質工学系　助手

  • 1998/04 - 1999/03
    筑波大学物理工学系　助手

  • 1994/04 - 1998/03
    ISSP, University of Tokyo　研究員

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Education 2

  • Science University of Tokyo　Graduate School, Division of Natural Science　物理学専攻

    - 1996/09

  • Science University of Tokyo　Faculty of Science　Dept. Physics

    - 1992/03

Committee Memberships 4

  • 大学院理学研究科副研究科長 (部局内委員会)　学内委員

    2023/04 - Present

  • 年次報告書作成担当 委員 (専攻内委員会)　学内委員

    2018/04 - Present

  • 東京大学物性研究所スーパーコンピューター共同利用委員会 (委員)　他大学共同利用機関委員等

    2007/04 - Present

  • 日本物理学会 JPSJ編集委員会 (編集委員)　雑誌編集委員等

    2015/04 - 2025/03

Professional Memberships 1

  • Physical Society of Japan

Research Interests 3

  • 数値解析

  • 強相関電子系

  • 物性理論、強相関電子系、数値解析

Research Areas 2

  • Natural sciences / Magnetism, superconductivity, and strongly correlated systems /

  • Natural sciences / Semiconductors, optical and atomic physics /

Awards 2

  1. 森田記念賞

    2010/10/30　泉萩会　密度行列繰り込み群による強相関電子系の研究

  2. 井上研究奨励賞

    1998/02　井上科学財団

Papers 87

  1. Synthesizing 2h/e 2 resistance plateau at the first Landau level confined in a quantum point contact

    Mohammad Hamzah Fauzi, Keita Nakagawara, Katsushi Hashimoto, Naokazu Shibata, Yoshiro Hirayama

    Communications Physics　6　(1)　2023/12

    DOI： 10.1038/s42005-023-01491-8 　

    eISSN： 2399-3650

  2. Coherent-Incoherent Crossover of Charge and Neutral Mode Transport as Evidence for the Disorder-Dominated Fractional Edge Phase Peer-reviewed

    Masayuki Hashisaka, Takuya Ito, Takafumi Akiho, Satoshi Sasaki, Norio Kumada, Naokazu Shibata, Koji Muraki

    Physical Review X　13　(3)　031024-1-15　2023/09/07

    Publisher: American Physical Society (APS)

    DOI： 10.1103/physrevx.13.031024 　

    eISSN： 2160-3308

  3. Dynamics of the fractional quantum Hall edge probed by stroboscope measurements of trions

    Akinori Kamiyama, Masahiro Matsuura, John N. Moore, Takaaki Mano, Naokazu Shibata, Go Yusa

    APPLIED PHYSICS LETTERS　122　(20)　2023/05

    DOI： 10.1063/5.0138332 　

    ISSN： 0003-6951

    eISSN： 1077-3118

  4. Statistics of the number of defects after quantum annealing in a thermal environment

    Sei Suzuki, Hiroki Oshiyama, Naokazu Shibata

    PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES　381　(2241)　2023/01

    DOI： 10.1098/rsta.2021.0411 　

    ISSN： 1364-503X

    eISSN： 1471-2962

  5. Classical Simulation and Theory of Quantum Annealing in a Thermal Environment

    Hiroki Oshiyama, Sei Suzuki, Naokazu Shibata

    PHYSICAL REVIEW LETTERS　128　(17)　2022/04

    DOI： 10.1103/PhysRevLett.128.170502 　

    ISSN： 0031-9007

    eISSN： 1079-7114

  6. Real-time and space visualization of excitations of the ν=1/3 fractional quantum Hall edge

    Akinori Kamiyama, Masahiro Matsuura, John N. Moore, Takaaki Mano, Naokazu Shibata, Go Yusa

    Physical Review Research　4　(1)　2022/03/28

    Publisher: American Physical Society ({APS})

    DOI： 10.1103/PhysRevResearch.4.L012040 　

    More details Close

    We present scanning optical stroboscopic confocal microscopy and spectroscopy measurements wherein three degrees of freedom, namely energy, real-space, and real-time, are resolvable. The edge-state propagation is detected as a temporal change in the optical response in the downstream edge. We succeeded in visualizing the excited states of the most fundamental fractional quantum Hall (FQH) state and the collective excitations near the edge. The results verify the current understanding of the edge excitation and also point toward further dynamics outside the edge channel.

  7. Even-denominator fractional quantum Hall state in conventional triple-gated quantum point contact

    Yasuaki Hayafuchi, Ryota Konno, Annisa Noorhidayati, Mohammad Hamzah Fauzi, Naokazu Shibata, Katsushi Hashimoto, Yoshiro Hirayama

    APPLIED PHYSICS EXPRESS　15　(2)　025002　2022/02

    DOI： 10.35848/1882-0786/ac4c35 　

    ISSN： 1882-0778

    eISSN： 1882-0786

  8. Ground-state phase diagram of the one-dimensional t-J(s)-J(tau) model at quarter filling

    Yuya Kurebayashi, Hiroki Oshiyama, Naokazu Shibata

    PHYSICAL REVIEW B　103　(16)　2021/04

    DOI： 10.1103/PhysRevB.103.165115 　

    ISSN： 2469-9950

    eISSN： 2469-9969

  9. Density matrix renormalization group study of the nu=1/3 edge states in fractional quantum Hall systems

    Takuya Ito, Naokazu Shibata

    PHYSICAL REVIEW B　103　(11)　2021/03

    DOI： 10.1103/PhysRevB.103.115107 　

    ISSN： 2469-9950

    eISSN： 2469-9969

  10. Kibble-Zurek Mechanism in a Dissipative Transverse Ising Chain

    Hiroki Oshiyama, Naokazu Shibata, Sei Suzuki

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　89　(10)　2020/10

    DOI： 10.7566/JPSJ.89.104002 　

    ISSN： 0031-9015

  11. Probing the universality of topological defect formation in a quantum annealer: Kibble-Zurek mechanism and beyond

    Yuki Bando, Yuki Susa, Hiroki Oshiyama, Naokazu Shibata, Masayuki Ohzeki, Fernando Javier Gomez-Ruiz, Daniel A. Lidar, Sei Suzuki, Adolfo del Campo, Hidetoshi Nishimori

    PHYSICAL REVIEW RESEARCH　2　(3)　2020/09

    DOI： 10.1103/PhysRevResearch.2.033369 　

    eISSN： 2643-1564

  12. Quantum Annealing of Pure and Random Ising Chains Coupled to a Bosonic Environment Peer-reviewed

    Suzuki Sei, Oshiyama Hiroki, Shibata Naokazu

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　88　(6)　2019/06/15

    DOI： 10.7566/JPSJ.88.061003 　

    ISSN： 0031-9015

  13. Evidence for a correlated phase of skyrmions observed in real space Peer-reviewed

    John N. Moore, Hikaru Iwata, Junichiro Hayakawa, Takaaki Mano, Takeshi Noda, Naokazu Shibata, Go Yusa

    PHYSICAL REVIEW B　98　(16)　2018/10

    DOI： 10.1103/PhysRevB.98.161402 　

    ISSN： 2469-9950

    eISSN： 2469-9969

  14. Thermodynamic properties of the S=1/2 twisted triangular spin tube Peer-reviewed

    Takuya Ito, Chihiro Iino, Naokazu Shibata

    Physical Review B　97　(18)　184409-1-5　2018/05/07

    Publisher: American Physical Society

    DOI： 10.1103/PhysRevB.97.184409 　

    ISSN： 2469-9969 2469-9950

  15. Transmission and reflection of charge-density wave packets in a quantum Hall edge controlled by a metal gate Peer-reviewed

    Masahiro Matsuura, Takaaki Mano, Takeshi Noda, Naokazu Shibata, Masahiro Hotta, Go Yusa

    APPLIED PHYSICS LETTERS　112　(6)　063104-1-4　2018/02

    DOI： 10.1063/1.5009373 　

    ISSN： 0003-6951

    eISSN： 1077-3118

  16. Fractional quantum hall effects in graphene on a h-BN substrate Peer-reviewed

    Kouki Yonaga, Naokazu Shibata

    Journal of the Physical Society of Japan　87　(3)　034708-1-034708-5　2018

    Publisher: Physical Society of Japan

    DOI： 10.7566/JPSJ.87.034708 　

    ISSN： 1347-4073 0031-9015

  17. Field-Induced Transitions in Anisotropic Kondo Lattice - Application to CeT2Al10 - Peer-reviewed

    Taku Kikuchi, Shintaro Hoshino, Naokazu Shibata, Yoshio Kuramoto

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　86　(9)　094602-094602-8　2017/09

    DOI： 10.7566/JPSJ.86.094602 　

    ISSN： 0031-9015

  18. Multiple magnetization plateaus and magnetic structures in the S=1/2 Heisenberg model on the checkerboard lattice Peer-reviewed

    Katsuhiro Morita, Naokazu Shibata

    PHYSICAL REVIEW B　94　(14)　2016/10

    DOI： 10.1103/PhysRevB.94.140404 　

    ISSN： 2469-9950

    eISSN： 2469-9969

  19. Field-Induced Quantum Phase Transitions in S=1/2 J(1)-J(2) Heisenberg Model on Square Lattice Peer-reviewed

    Katsuhiro Morita, Naokazu Shibata

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　85　(9)　094708-094708-4　2016/09

    DOI： 10.7566/JPSJ.85.094708 　

    ISSN： 0031-9015

  20. Formulation of the relativistic quantum Hall effect and parity anomaly Peer-reviewed

    Kouki Yonaga, Kazuki Hasebe, Naokazu Shibata

    PHYSICAL REVIEW B　93　(23)　235122-1-9　2016/06

    DOI： 10.1103/PhysRevB.93.235122 　

    ISSN： 2469-9950

    eISSN： 2469-9969

  21. Exact Nonmagnetic Ground State and Residual Entropy of S=1/2 Heisenberg Diamond Spin Lattices Peer-reviewed

    Katsuhiro Morita, Naokazu Shibata

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　85　(3)　033705-033705-4　2016/03

    DOI： 10.7566/JPSJ.85.033705 　

    ISSN： 0031-9015

  22. Ground State Phase Diagram of Twisted Three-Leg Spin Tube in Magnetic Field Peer-reviewed

    Kouki Yonaga, Naokazu Shibata

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　84　(9)　094706-094706-6　2015/09

    DOI： 10.7566/JPSJ.84.094706 　

    ISSN： 0031-9015

  23. NMR profiling of quantum electron solids in high magnetic fields Peer-reviewed

    L. Tiemann, T. D. Rhone, N. Shibata, K. Muraki

    NATURE PHYSICS　10　(9)　648-652　2014/09

    DOI： 10.1038/NPHYS3031 　

    ISSN： 1745-2473

    eISSN： 1745-2481

  24. Magnetization Plateaus in the One-Dimensional Kondo Lattice Model Peer-reviewed

    Ryuhei Ishiyama, Naokazu Shibata

    JPS Conf. Proc.　3　011032-1-5　2014/06/16

  25. Anomalous Metallic Phase in the One-Dimensional Kondo Lattice Model Peer-reviewed

    Hiroshi Wakameda, Naokazu Shibata

    JPS Conf. Proc.　3　011089-1-5　2014/06

  26. Grand canonical finite size numerical approaches in one and two dimensions: Real space energy renormalization and edge state generation Peer-reviewed

    Chisa Hotta, Satoshi Nishimoto, Naokazu Shibata

    Physical Review B - Condensed Matter and Materials Physics　87　(11)　115128-1-19　2013/03/21

    DOI： 10.1103/PhysRevB.87.115128 　

    ISSN： 1098-0121 1550-235X

  27. Controlling frustrated liquids and solids with an applied field in a kagome Heisenberg antiferromagnet Peer-reviewed

    Satoshi Nishimoto, Naokazu Shibata, Chisa Hotta

    Nature Communications　4　2287-1-6　2013

    DOI： 10.1038/ncomms3287 　

    ISSN： 2041-1723

  28. Quasi-Particle Tunneling in Anti-Pfaffian Quantum Hall State Peer-reviewed

    Toru Ito, Kentaro Nomura, Naokazu Shibata

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　81　(8)　083705-1-4　2012/08

    DOI： 10.1143/JPSJ.81.083705 　

    ISSN： 0031-9015

  29. Grand canonical finite-size numerical approaches: A route to measuring bulk properties in an applied field Peer-reviewed

    Chisa Hotta, Naokazu Shibata

    PHYSICAL REVIEW B　86　(4)　041108(R)-1-5　2012/07

    DOI： 10.1103/PhysRevB.86.041108 　

    ISSN： 1098-0121

  30. Quantum Phase Transitions Induced by the Spin-Orbit Interaction in the N=1 Landau Level Peer-reviewed

    Toru Ito, Kentaro Nomura, Naokazu Shibata

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　81　(3)　034713-1-7　2012/03

    DOI： 10.1143/JPSJ.81.034713 　

    ISSN： 0031-9015

  31. Boundary effects in the density-matrix renormalization group calculation Peer-reviewed

    Naokazu Shibata, Chisa Hotta

    Physical Review B - Condensed Matter and Materials Physics　84　(11)　2011/09/16

    DOI： 10.1103/PhysRevB.84.115116 　

    ISSN： 1098-0121 1550-235X

  32. Boundary effects in the density-matrix renormalization group calculation Peer-reviewed

    Naokazu Shibata, Chisa Hotta

    PHYSICAL REVIEW B　84　(11)　115116-1-9　2011/09

    DOI： 10.1103/PhysRevB.84.115116 　

    ISSN： 2469-9950

    eISSN： 2469-9969

  33. Modulation induced stripe phase at fractional fillings Peer-reviewed

    Akira Endo, Naokazu Shibata, Yasuhiro Iye

    HORIBA INTERNATIONAL CONFERENCE: THE 19TH INTERNATIONAL CONFERENCE ON THE APPLICATION OF HIGH MAGNETIC FIELDS IN SEMICONDUCTOR PHYSICS AND NANOTECHNOLOGY　334　012023-1-5　2011

    DOI： 10.1088/1742-6596/334/1/012023 　

    ISSN： 1742-6588

  34. DMRG study of fractional quantum Hall effect and valley skyrmions in graphene Invited Peer-reviewed

    Naokazu Shibata

    HORIBA INTERNATIONAL CONFERENCE: THE 19TH INTERNATIONAL CONFERENCE ON THE APPLICATION OF HIGH MAGNETIC FIELDS IN SEMICONDUCTOR PHYSICS AND NANOTECHNOLOGY　334　012003-1-7　2011

    DOI： 10.1088/1742-6596/334/1/012003 　

    ISSN： 1742-6588

  35. Modulation Induced Phase Transition from Fractional Quantum Hall to Stripe State at nu=5/3 Peer-reviewed

    Akira Endo, Naokazu Shibata, Yasuhiro Iye

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　79　(10)　103707-1-103707-4　2010/10

    DOI： 10.1143/JPSJ.79.103707 　

    ISSN： 0031-9015

  36. Spin-Orbit Interaction Enhanced Fractional Quantum Hall States in the Second Landau Level Peer-reviewed

    Toru Ito, Kentaro Nomura, Naokazu Shibata

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　79　(7)　073003-1-073003-4　2010/07

    DOI： 10.1143/JPSJ.79.073003 　

    ISSN： 0031-9015

  37. Stability of the Excitonic Phase in Bilayer Quantum Hall Systems at Total Filling One -Effects of Finite Well Width and Pseudopotentials- Peer-reviewed

    Daijiro Yoshioka, Naokazu Shibata

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　79　(6)　064717-1-064717-6　2010/06

    DOI： 10.1143/JPSJ.79.064717 　

    ISSN： 0031-9015

  38. Collapse of the fractional quantum Hall state by a unidirectional periodic potential modulation Peer-reviewed

    A. Endo, N. Shibata, Y. Iye

    PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES　42　(4)　1042-1045　2010/02

    DOI： 10.1016/j.physe.2009.10.024 　

    ISSN： 1386-9477

    eISSN： 1873-1759

  39. Fractional Quantum Hall Effects in Graphene and Its Bilayer Peer-reviewed

    Naokazu Shibata, Kentaro Nomura

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　78　(10)　104708　2009/10

    DOI： 10.1143/JPSJ.78.104708 　

    ISSN： 0031-9015

  40. Quantum Hall Systems Studied by the Density Matrix Renormalization Group Method Invited Peer-reviewed

    Naokazu Shibata

    Prog. Theor. Phys. Suppl.　176　(176)　182-202　2009/02

    Publisher: Progress of Theoretical Physics

    DOI： 10.1143/PTPS.176.182 　

    ISSN： 0375-9687

    More details Close

    The ground-state and low-energy excitations of quantum Hall systems are studied by the density matrix renormalization group (DMRG) method. From the ground-state pair correlation functions and low-energy excitions, the ground-state phase diagram is determined, which consists of incompressible liquid states, Fermi liquid type compressible liquid states, and many kinds of CDW states called stripe, bubble and Wigner crystal. The spin transition and the domain formation are studied at ν=2/3. The evolution from composite fermion liquid state to an excitonic state in bilayer systems is investigated at total filling factor ν=1.

  41. Coupled charge and valley excitations in graphene quantum Hall ferromagnets Peer-reviewed

    Naokazu Shibata, Kentaro Nomura

    Physical Review B - Condensed Matter and Materials Physics　77　(23)　2008/06/18

    DOI： 10.1103/PhysRevB.77.235426 　

    ISSN： 1098-0121 1550-235X

  42. Coupled charge and valley excitations in graphene quantum Hall ferromagnets Peer-reviewed

    Naokazu Shibata, Kentaro Nomura

    PHYSICAL REVIEW B　77　(23)　235426　2008/06

    DOI： 10.1103/PhysRevB.77.235426 　

    ISSN： 2469-9950

    eISSN： 2469-9969

  43. Phase separation in v=2/3 fractional quantum hall systems Peer-reviewed

    Naokazu Shibata, Kentaro Nomura

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　76　(10)　103711　2007/10

    DOI： 10.1143/JPSJ.76.103711 　

    ISSN： 0031-9015

  44. Absence of dimer order and the Tomonaga-Luttinger liquid properties of the quarter-filled one-dimensional Kondo-lattice model Peer-reviewed

    C Hotta, N Shibata

    PHYSICA B-CONDENSED MATTER　378-80　1039-1040　2006/05

    DOI： 10.1016/j.physb.2006.01.396 　

    ISSN： 0921-4526

    eISSN： 1873-2135

  45. Theory of Fano-Kondo effect in quantum dot systems: Temperature dependence of the Fano line shapes Peer-reviewed

    Maruyama, I, N Shibata, K Ueda

    PHYSICA B-CONDENSED MATTER　378-80　938-939　2006/05

    DOI： 10.1016/j.physb.2006.01.357 　

    ISSN： 0921-4526

  46. Ground state of v=1 bilayer quantum Hall systems Peer-reviewed

    N Shibata, D Yoshioka

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　75　(4)　043712-043715　2006/04

    DOI： 10.1143/JPSJ.75.043712 　

    ISSN： 0031-9015

  47. Theory of Fano-Kondo effect of transport properties through quantum dots Peer-reviewed

    Maruyama, I, N Shibata, K Ueda

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　73　(12)　3239-3242　2004/12

    DOI： 10.1143/JPSJ.73.3239 　

    ISSN： 0031-9015

  48. Real space effective interaction and phase transition in the lowest Landau level Peer-reviewed

    N Shibata, D Yoshioka

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　73　(8)　2169-2173　2004/08

    DOI： 10.1143/JPSJ.73.2169 　

    ISSN： 0031-9015

  49. Ground state phase diagram of 2D electrons in high magnetic field Invited Peer-reviewed

    N Shibata, D Yoshioka

    PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES　22　(1-3)　111-114　2004/04

    DOI： 10.1016/j.physe.2003.11.228 　

    ISSN： 1386-9477

    eISSN： 1873-1759

  50. Conductance through quantum dots studied by finite temperature DMRG Peer-reviewed

    Maruyama, I, N Shibata, K Ueda

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　73　(2)　434-440　2004/02

    DOI： 10.1143/JPSJ.73.434 　

    ISSN： 0031-9015

  51. Stripe state in the lowest Landau level Peer-reviewed

    N Shibata, D Yoshioka

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　73　(1)　1-4　2004/01

    DOI： 10.1143/JPSJ.73.1 　

    ISSN： 0031-9015

  52. Application of the density matrix renormalization group method to finite temperatures and two-dimensional systems Invited Peer-reviewed

    N Shibata

    JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL　36　(37)　R381-R410　2003/09

    DOI： 10.1088/0305-4470/36/37/201 　

    ISSN： 0305-4470

  53. Ground state phase diagram of 2D electrons in high magnetic field Peer-reviewed

    N Shibata, D Yoshioka

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　72　(3)　664-672　2003/03

    DOI： 10.1143/JPSJ.72.664 　

    ISSN： 0031-9015

  54. Kondo hole in one-dimensional Kondo insulators

    Isao Maruyama, Naokazu Shibata, Kazuo Ueda

    Physical Review B - Condensed Matter and Materials Physics　65　(17)　1744211-1744215　2002/05/01

    ISSN： 0163-1829

  55. Staggered-field effect on the magnetic-field-induced magnetization of the one-dimensional antiferromagnet Yb4As3 Peer-reviewed

    K. Iwasa, M. Kohgi, A Gukasov, J.M. Mignot, N. Shibata, A. Ochiai, H. Aoki, T. Suzuki

    Phys. Rev. B　65　052408-052411　2002/03

  56. Staggered-field effect on the magnetic-field-induced magnetization of the one-dimensional antiferromagnet (formula presented) Peer-reviewed

    Kazuaki Iwasa, Masahumi Kohgi, Arsen Gukasov, Jean-Michel Mignot, Naokazu Shibata, Akira Ochiai, Hidekazu Aoki, Takashi Suzuki

    Physical Review B - Condensed Matter and Materials Physics　65　(5)　1-4　2002

    DOI： 10.1103/PhysRevB.65.052408 　

    ISSN： 1550-235X 1098-0121

  57. DMRG study of the ground state at higher Landau levels - Stripes, bubbles and the Wigner crystal Peer-reviewed

    Daijiro Yoshioka, Naokazu Shibata

    Physica E: Low-Dimensional Systems and Nanostructures　12　(1-4)　43-45　2002/01

    DOI： 10.1016/S1386-9477(01)00306-X 　

    ISSN： 1386-9477

  58. Kondo hole in one-dimensional Kondo insulators Invited Peer-reviewed

    Isao Maruyama, Naokazu Shibata, Kazuo Ueda

    Physical Review B - Condensed Matter and Materials Physics　65　(17)　1-5　2002

    DOI： 10.1103/PhysRevB.65.174421 　

    ISSN： 1550-235X 1098-0121

    eISSN： 1550-235X

  59. Thermodynamic Properties of the S = 1/2 Heisenberg Chain with Staggered Dzyaloshinsky-Moriya Interaction Peer-reviewed

    Naokazu Shibata, Kazuo Ueda

    Journal of the Physical Society of Japan　70　(12)　3690-3694　2001/12

    DOI： 10.1143/JPSJ.70.3690 　

    ISSN： 0031-9015

  60. Ground-state phase diagram of 2D electrons in a high Landau level Peer-reviewed

    Naokazu Shibata, Daijiro Yoshioka

    Phys. Rev. Lett.　86　5755-5758　2001/10

    DOI： 10.1103/PhysRevLett.86.5755 　

  61. Polarized-neutron study of one-dimensional magnetic response under magnetic field in the charge-ordered phase of Yb4As3 Peer-reviewed

    Kazuaki Iwasa, Masahumi Kohgi, Arsen Gukasov, Jean-Michel Mignot, Naokazu Shibata, Akira Ochiai, Hidekazu Aoki, Takashi Suzuki

    Journal of Magnetism and Magnetic Materials　226-230　(I)　441-443　2001

    Publisher: Elsevier B.V.

    DOI： 10.1016/S0304-8853(00)00909-4 　

    ISSN： 0304-8853

  62. Lower symmetric generalization of the SU(4) spin-orbit model Peer-reviewed

    Yasufumi Yamashita, Naokazu Shibata, Kazuo Ueda

    Physica B: Condensed Matter　281-282　542-543　2000/06/01

    Publisher: Elsevier Science Publishers B.V.

    DOI： 10.1016/S0921-4526(99)00993-X 　

    ISSN： 0921-4526

  63. Dynamic properties of the doped Kondo insulator in one dimension Peer-reviewed

    Naokazu Shibata, Hirokazu Tsunetsugu

    Physica B: Condensed Matter　281-282　311-312　2000/06/01

    Publisher: Elsevier Science Publishers B.V.

    DOI： 10.1016/S0921-4526(99)00839-X 　

    ISSN： 0921-4526

  64. Numerical study of the one-dimensional spin-orbit coupled system with SU(2)⊗SU(2) symmetry Peer-reviewed

    Yasufumi Yamashita, Naokazu Shibata, Kazuo Ueda

    Journal of the Physical Society of Japan　69　(1)　242-247　2000

    Publisher: Physical Society of Japan

    DOI： 10.1143/JPSJ.69.242 　

    ISSN： 0031-9015

  65. Crossover phenomena in the one-dimensional SU(4) spin-orbit model under magnetic fields Peer-reviewed

    Yasufumi Yamashita, Naokazu Shibata, Kazuo Ueda

    Physical Review B - Condensed Matter and Materials Physics　61　(6)　4012-4018　2000

    DOI： 10.1103/PhysRevB.61.4012 　

    ISSN： 1550-235X 1098-0121

  66. Spin, charge and quasi-particle gaps in the one-dimensional Kondo lattice with f(2) configuration Peer-reviewed

    S Watanabe, Y Kuramoto, T Nishino, N Shibata

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　68　(1)　159-165　1999/01

    DOI： 10.1143/JPSJ.68.159 　

    ISSN： 0031-9015

  67. Thermodynamics of the t−J ladder: A stable finite-temperature density matrix renormalization group calculation Peer-reviewed

    Beat Ammon, Matthias Troyer, T. M. Rice, N. Shibata

    Physical Review Letters　82　(19)　3855-3858　1999

    DOI： 10.1103/PhysRevLett.82.3855 　

    ISSN： 1079-7114 0031-9007

  68. Dynamic Correlations in Doped 1D Kondo Insulator - Finite-T DMRG Study - Peer-reviewed

    Naokazu Shibata, Hirokazu Tsunetsugu

    Journal of the Physical Society of Japan　68　(10)　3138-3141　1999

    Publisher: Physical Society of Japan

    DOI： 10.1143/JPSJ.68.3138 　

    ISSN： 0031-9015

  69. Efficiency of asymmetric targeting for finite-T DMRG Peer-reviewed

    Tomotoshi Nishino, Naokazu Shibata

    Journal of the Physical Society of Japan　68　(11)　3501-3504　1999

    Publisher: Physical Society of Japan

    DOI： 10.1143/JPSJ.68.3501 　

    ISSN： 0031-9015

  70. The one-dimensional Kondo lattice model studied by the density matrix renormalization group method Invited Peer-reviewed

    N Shibata, K Ueda

    JOURNAL OF PHYSICS-CONDENSED MATTER　11　(2)　R1-R30　1999/01

    DOI： 10.1088/0953-8984/11/2/002 　

    ISSN： 0953-8984

  71. SU(4) spin-orbit critical state in one dimension Peer-reviewed

    Y Yamashita, N Shibata, K Ueda

    PHYSICAL REVIEW B　58　(14)　9114-9118　1998/10

    DOI： 10.1103/PhysRevB.58.9114 　

    ISSN： 1098-0121

    eISSN： 1550-235X

  72. Melting of an antiferromagnetic Heisenberg spin chain by external magnetic fields Peer-reviewed

    Tetsuya Mutou, Naokazu Shibata, Kazuo Ueda

    J. Phys.: Condens. Matter　10　L507-L511　1998/05

    DOI： 10.1088/0953-8984/10/29/004 　

  73. Thermodynamic properties of the one-dimensional Kondo insulators studied by the density matrix renormalization group method Peer-reviewed

    N Shibata, B Ammon, M Troyer, M Sigrist, K Ueda

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　67　(4)　1086-1089　1998/04

    DOI： 10.1143/JPSJ.67.1086 　

    ISSN： 0031-9015

  74. Temperature-induced gap formation in dynamic correlation functions of the one-dimensional kondo insulator: Finite-temperature density-matrix renormalization-group study Peer-reviewed

    Tetsuya Mutou, Naokazu Shibata, Kazuo Ueda

    Physical Review Letters　81　(22)　4939-4942　1998

    DOI： 10.1103/PhysRevLett.81.4939 　

    ISSN： 1079-7114 0031-9007

  75. Metal-insulator transition accompanied with a charge ordering in the one-dimensional model Peer-reviewed

    Tetsuya Mutou, Naokazu Shibata, Kazuo Ueda

    Physical Review B - Condensed Matter and Materials Physics　57　(21)　13702-13705　1998

    DOI： 10.1103/PhysRevB.57.13702 　

    ISSN： 1550-235X 1098-0121

  76. Phase transition in the one-dimensional Kondo lattice model with attractive electron-electron interaction Peer-reviewed

    Naokazu Shibata, Manfred Sigrist, Elmar Heeb

    Phys. Rev. B　56　11084-11091　1997/09

    DOI： 10.1103/PhysRevB.56.11084 　

  77. Thermodynamics of the anisotropic Heisenberg chain calculated by the density matrix renormalization group method Peer-reviewed

    N Shibata

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　66　(8)　2221-2223　1997/08

    DOI： 10.1143/JPSJ.66.2221 　

    ISSN： 0031-9015

  78. One-dimensional Kondo lattice model as a Tomonaga-Luttinger liquid Peer-reviewed

    Naokazu Shibata, Alexei Tsvelik

    Physical Review B - Condensed Matter and Materials Physics　56　(1)　330-334　1997

    DOI： 10.1103/PhysRevB.56.330 　

    ISSN： 1550-235X 1098-0121

  79. Large Fermi surface of the one-dimensional Kondo lattice model observed by Friedel oscillations Peer-reviewed

    Naokazu Shibata, Kazuo Ueda, Tomotoshi Nishino, Chikara Ishii

    Physica B: Condensed Matter　230-232　1024-1027　1997

    Publisher: Elsevier

    DOI： 10.1016/S0921-4526(96)00795-8 　

    ISSN： 0921-4526

  80. Devil's staircase in Kondo semimetals Peer-reviewed

    Kazuo Ueda, Naokazu Shibata, Chikara Ishii

    Physica B: Condensed Matter　223-224　(1-4)　426-428　1996/06/02

    Publisher: Elsevier

    DOI： 10.1016/0921-4526(96)00139-1 　

    ISSN： 0921-4526

  81. Néel orders, Haldane gap and Kondo spin liquid phase in the anisotropic Kondo chain Peer-reviewed

    Naokazu Shibata, Chikara Ishii, Kazuo Ueda

    Physica B: Condensed Matter　223-224　(1-4)　363-365　1996/06/02

    Publisher: Elsevier

    DOI： 10.1016/0921-4526(96)00123-8 　

    ISSN： 0921-4526

  82. Spin and charge gaps in the one-dimensional Kondo-lattice model with Coulomb interaction between conduction electrons Peer-reviewed

    Naokazu Shibata, Tomotoshi Nishino

    Physical Review B - Condensed Matter and Materials Physics　53　(14)　R8828-R8831　1996

    DOI： 10.1103/PhysRevB.53.R8828 　

    ISSN： 1550-235X 1098-0121

  83. Friedel oscillations in the one-dimensional Kondo lattice model Peer-reviewed

    Naokazu Shibata, Kazuo Ueda

    Physical Review B - Condensed Matter and Materials Physics　54　(19)　13495-13498　1996

    DOI： 10.1103/PhysRevB.54.13495 　

    ISSN： 1550-235X 1098-0121

  84. Néel orders, Haldane gap, and Kondo singlet phase in the anisotropic Kondo chain Peer-reviewed

    Naokazu Shibata, Chikara Ishii, Kazuo Ueda

    Physical Review B　51　(6)　3626-3631　1995

    DOI： 10.1103/PhysRevB.51.3626 　

    ISSN： 0163-1829

  85. Devil's staircase in Kondo semimetals at low temperatures Peer-reviewed

    Naokazu Shibata, Chikara Ishii, Kazuo Ueda

    Physical Review B　52　(14)　10232-10238　1995

    DOI： 10.1103/PhysRevB.52.10232 　

    ISSN： 0163-1829

  86. THERMODYNAMICS OF LOW-DIMENSIONAL HEISENBERG FERROMAGNETS BY THE GREEN-FUNCTION METHOD Peer-reviewed

    F SUZUKI, N SHIBATA, C ISHII

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　63　(4)　1539-1547　1994/04

    DOI： 10.1143/JPSJ.63.1539 　

    ISSN： 0031-9015

  87. Exact Diagonalization of the RKKY Lattice Reduced from the Anderson Lattice Peer-reviewed

    Naokazu Shibata, Ryousuke Shiina, Chikara Ishii

    Journal of the Physical Society of Japan　61　(12)　4572-4576　1992

    DOI： 10.1143/JPSJ.61.4572 　

    ISSN： 1347-4073 0031-9015

Show all ︎Show first 5

Misc. 94

  1. ν = 3/2 structure of quantum point contact: Temperature, magnetic field, filling factor dependence

    早渕恭章, 金野遼大, NOORHIDAYATI A., FAUZI M. H., 柴田尚和, 橋本克之, 橋本克之, 橋本克之, 平山祥郎, 平山祥郎, 平山祥郎, 平山祥郎

    日本物理学会講演概要集(CD-ROM)　76　(1)　2021

    ISSN： 2189-079X

  2. ν=3/2 structure of quantum point contact: Importance of the center gate

    金野遼大, 早渕恭章, NOORHIDAYATI Annisa, FAUZI M. Hamzah, 柴田尚和, 橋本克之, 橋本克之, 橋本克之, 平山祥郎, 平山祥郎, 平山祥郎, 平山祥郎

    日本物理学会講演概要集(CD-ROM)　76　(1)　2021

    ISSN： 2189-079X

  3. 量子ホールエッジにおける量子エネルギーテレポーテーションの試み

    松浦雅広, 野田武司, 間野高明, 柴田尚和, 堀田昌寛, 遊佐剛

    日本物理学会講演概要集(CD-ROM)　72　(2)　2017

    ISSN： 2189-079X

  4. 強磁場中2次元電子系のウィグナー結晶状態とそのNMR観測

    柴田尚和, 村木康二

    固体物理　50　(7)　381-392　2015/07

    Publisher: アグネ技術センター

    ISSN： 0454-4544

  5. 8aPS-2 The ground state phase diagram of the one-dimensional Kondo lattice model in a low electron density region

    Wakameda Hiroshi, Shibata Naokazu

    Meeting abstracts of the Physical Society of Japan　69　(2)　357-357　2014/08/22

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  6. 8aBA-9 Analysis of two-dimensional frustrated quantum spin systems by the DMRG method using SSD

    Morita K., Shibata N.

    Meeting abstracts of the Physical Society of Japan　69　(2)　286-286　2014/08/22

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  7. 30aAF-3 DMRG studies of two dimensional quantum spin systems

    Morita K., Wakameda H., shibata N.

    Meeting abstracts of the Physical Society of Japan　69　(1)　534-534　2014/03/05

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  8. 27aPS-103 Magnetic properties of frustrated three-leg spin tube in magnetic field

    Yonaga K., Shibata N.

    Meeting abstracts of the Physical Society of Japan　69　(1)　499-499　2014/03/05

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  9. 28aPS-4 Composite particles in the one-dimensional Kondo lattice model

    Wakameda Hiroshi, Shibata Naokazu

    Meeting abstracts of the Physical Society of Japan　69　(1)　594-594　2014/03/05

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  10. Anomalous metallic phase around 1/6 filling of the one-dimensional Kondo-lattice model

    Wakameda Hiroshi, Shibata Naokazu

    Meeting abstracts of the Physical Society of Japan　68　(2)　477-477　2013/08/26

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  11. 19aCD-4 Magnetization processes in the triangular lattice and Kagome lattice

    Nishimoto S., Hotta C., Shibata N.

    Meeting abstracts of the Physical Society of Japan　67　(2)　415-415　2012/08/24

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  12. 20pGB-11 Paramagnetic metallic phase in the one-dimensional Kondo-lattice model

    Wakameda Hiroshi, Shibata Naokazu

    Meeting abstracts of the Physical Society of Japan　67　(2)　556-556　2012/08/24

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  13. 20pAC-8 Grand Canonical Finite Size Numerical Approaches

    Hotta C., Shibata N.

    Meeting abstracts of the Physical Society of Japan　67　(2)　291-291　2012/08/24

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  14. 19aFB-8 N=1ランダウ準位におけるパラフェルミオン状態について(19aFB 量子ホール効果(分数量子ホール効果・核スピン),領域4(半導体,メゾスコピック系・局在))

    伊藤 透, 野村 健太郎, 柴田 尚和

    日本物理学会講演概要集　67　(2)　625-625　2012/08/24

    Publisher: 一般社団法人日本物理学会

    ISSN： 1342-8349

  15. Spin-Orbit Interaction Enhanced Fractional Quantum Hall States in the Second Landau Level (vol 79, 073003, 2010)

    Toru Ito, Kentaro Nomura, Naokazu Shibata

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　81　(5)　2012/05

    DOI： 10.1143/JPSJ.81.058002 　

    ISSN： 0031-9015

  16. 27pCJ-5 Tunneling Study of Electron and Quasi-Particle in the Anti-Pfaffian States

    Ito Toru, Nomura Kentaro, Shibata Naokazu

    Meeting abstracts of the Physical Society of Japan　67　(1)　760-760　2012/03/05

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  17. 26pYB-10 Quantum phase transition in one-dimensional Kondo lattice model

    Shibata N., Hotta C.

    Meeting abstracts of the Physical Society of Japan　67　(1)　666-666　2012/03/05

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  18. 22pGT-11 Boundary condition dependence of long range quantum fluctuations

    Shibata N., Hotta C.

    Meeting abstracts of the Physical Society of Japan　66　(2)　239-239　2011/08/24

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  19. 25aHG-3 Spin-Orbit interaction enhanced fractional quantum Hall states

    Ito T., Nomura K., Shibata N.

    Meeting abstracts of the Physical Society of Japan　66　(1)　696-696　2011/03/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  20. 25aHD-7 Ground state phase diagram and fractional quantum Hall states of graphene in a high Landau level

    Higashi Tatsuya, Shibata Naokazu

    Meeting abstracts of the Physical Society of Japan　66　(1)　694-694　2011/03/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  21. Quantum Hall States and Entanglement Entropy(New Development of Numerical Simulations in Low-Dimensional Quantum Systems: From Density Matrix Renormalization Group to Tensor Network Formulations) :

    Shibata Naokazu

    95　(6)　624-624　2011

    Publisher: 物性研究刊行会

    ISSN： 0525-2997

  22. 25aWR-1 Spin-Orbit interaction enhanced fractional quantum Hall states

    Ito T., Nomura K., Shibata N.

    Meeting abstracts of the Physical Society of Japan　65　(2)　660-660　2010/08/18

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  23. 20aHV-9 Interaction-dependence of the excitonic-phase-boundary of bilayer quantum Hall systems

    YOSHIOKA Daijiro, SHIBATA Naokazu

    Meeting abstracts of the Physical Society of Japan　65　(1)　699-699　2010/03/01

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  24. 26pYE-15 Effects of electron correlations in graphene in high magnetic fields

    Higashi Tatsuya, Shibata Naokazu

    Meeting abstracts of the Physical Society of Japan　64　(2)　766-766　2009/08/18

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  25. 25pQD-3 Application of DMRG to quantum Hall systems and FQHE in graphene

    Shibata N.

    Meeting abstracts of the Physical Society of Japan　64　(2)　327-327　2009/08/18

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  26. 27pYH-13 Fractional quantum Hall states in monolayer and bilayer graphenes

    Shibata N., Nomura K.

    Meeting abstracts of the Physical Society of Japan　64　(1)　692-692　2009/03/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  27. 27pPSB-52 Ground state phase diagram of graphene in a high Landau level

    Higashi Tatsuya, Shibata Naokazu

    Meeting abstracts of the Physical Society of Japan　64　(1)　692-692　2009/03/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  28. 25pXD-7 Small amplitude magnetoresistance oscillation at v=5/3 in a unidirectional lateral superlattice

    Endo A., Shibata N., Iye Y.

    Meeting Abstracts of the Physical Society of Japan　64.2.4　(2)　580　2009

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.64.2.4.0_580_1 　

    ISSN： 1342-8349

    eISSN： 2189-0803

  29. DMRGと並進対称性の破れ(京都大学基礎物理学研究所研究会 密度行列繰り込み群法を用いた物性研究の新展開,研究会報告)

    堀田 知佐, 柴田 尚和

    物性研究　91　(6)　736-736　2009

    Publisher: 物性研究刊行会

    ISSN： 0525-2997

  30. 22aTA-8 Fractional quantum Hall states in bilayer graphene

    Shibata N., Nomura K.

    Meeting abstracts of the Physical Society of Japan　63　(2)　607-607　2008/08/25

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  31. 22aTA-7 CDW states in a high Landau level in Graphene

    Higashi Tatsuya, Shibata Naokazu

    Meeting abstracts of the Physical Society of Japan　63　(2)　607-607　2008/08/25

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  32. 25pWH-2 Skyrmion excitations in graphene under high magnetic field

    Shibata N., Nomura K.

    Meeting abstracts of the Physical Society of Japan　63　(1)　680-680　2008/02/29

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  33. 21pTH-3 Domain formation in ν=2 and ν=2/3 quantum Hall systems

    Shibata N., Nomura K.

    Meeting abstracts of the Physical Society of Japan　62　(2)　684-684　2007/08/21

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  34. 18aTA-5 Effects of Coulomb interaction between different spins in ν=2/3 QHS

    Shibata N.

    Meeting abstracts of the Physical Society of Japan　62　(1)　656-656　2007/02/28

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  35. 25aXL-6 Domain formation in υ=2/3 quantum Hall systems

    Shibata N.

    Meeting abstracts of the Physical Society of Japan　61　(2)　546-546　2006/08/18

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  36. 27pXB-9 Ground state of ν=1 bilayer quantum Hall systems

    Shibata N., Yoshioka D.

    Meeting abstracts of the Physical Society of Japan　61　(1)　675-675　2006/03/04

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  37. 20aYC-9 DMRG study of bilayer quantum Hall systems

    Shibata N., Yoshioka D.

    Meeting abstracts of the Physical Society of Japan　60　(2)　533-533　2005/08/19

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  38. 25pZC-3 Stripe, Bubble and Wigner crystal

    Shibata N.

    Meeting abstracts of the Physical Society of Japan　60　(1)　647-647　2005/03/04

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  39. 24aWM-6 Finite size effect and dimer state in 1D Kondo lattice model

    Shibata N., Hotta C.

    Meeting abstracts of the Physical Society of Japan　60　(1)　492-492　2005/03/04

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  40. 13pYC-3 Temperature dependence of the Fano and Kondo effect in the quantum dot

    Maruyama Isao, Shibata Naokazu, Ueda Kazuo

    Meeting abstracts of the Physical Society of Japan　59　(2)　605-605　2004/08/25

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  41. 28pYG-9 Strip-Liquid Transition in the Lowest Landau Level

    Shibata N., Yoshioka D.

    Meeting abstracts of the Physical Society of Japan　59　(1)　688-688　2004/03/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  42. 29pYA-2 Conductance through a quantum wire with a side-coupled quantum dot studied with the finite temperature DMRG

    Maruyama Isao, Shibata Naokazu, Ueda Kazuo

    Meeting abstracts of the Physical Society of Japan　59　(1)　695-695　2004/03/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  43. Stripe-liquid transition in the lowest Landau level

    Shibata N., Yoshioka D.

    Meeting abstracts of the Physical Society of Japan　58　(2)　594-594　2003/08/15

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  44. Magnetic impurities in one-dimensional strongly correlated electron systems Studied with Finite temperature DMRG

    Maruyama Isao, Shibata Naokazu, Ueda Kazuo

    Meeting abstracts of the Physical Society of Japan　58　(2)　260-260　2003/08/15

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  45. Possibility of composite fermion stripe state at filling factor 3/8

    Yoshioka Daijiro, Shibata Naokazu, Iwanami Daisuke

    Meeting abstracts of the Physical Society of Japan　58　(1)　675-675　2003/03/06

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  46. Ground state phase diagram of 2D electrons in the N=1 Landau level

    Shibata N., Yoshioka D.

    Meeting abstracts of the Physical Society of Japan　58　(1)　674-674　2003/03/06

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  47. Conductance through Quantum Dots Studied with Finite temperature DMRG

    Maruyama Isao, Shibata Naokazu, Ueda Kazuo

    Meeting abstracts of the Physical Society of Japan　58　(1)　661-661　2003/03/06

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  48. 強磁場中二次元電子系の基底状態の相図

    J. Phys. Soc. Jpn.　72　664-672　2003

  49. 密度行列繰り込み群の有限温度及び二次元系への応用

    J. Phys. A: Math. Gen.　36　R381-R410　2003

  50. Ground state phase diagram of 2D electrons in the lowest Landau Level

    Shibata N., Yoshioka D.

    Meeting abstracts of the Physical Society of Japan　57　(2)　582-582　2002/08/13

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  51. 24aSA-1 Ground state phase diagram of 2D electrons in N=1 Landau level

    Shibata N., Yoshioka D.

    Meeting abstracts of the Physical Society of Japan　57　(1)　611-611　2002/03/01

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  52. 25aWA-8 Formation of magnetic moment in one-dimensional Kondo insulators

    Maruyama Isao, Shibata Naokazu, Ueda Kazuo

    Meeting abstracts of the Physical Society of Japan　57　(1)　536-536　2002/03/01

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  53. 一次元反強磁性体Yb4As3における磁場誘起磁化の交代磁場効果

    Phys. Rev. B　65　052408-052411　2002

  54. 一次元近藤絶縁体中の非磁性不純物の効果

    Phys. Rev. B　65　174421-174425　2002

  55. Diverse electronic states in high Landau levels

    Shibata N., Yoshioka D.

    Meeting abstracts of the Physical Society of Japan　56　(2)　543-543　2001/09/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  56. Ground state phase diagram of 2D electrons in a high Landau level

    Shibata N., Yoshioka D.

    Meeting abstracts of the Physical Society of Japan　56　(1)　640-640　2001/03/09

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  57. 高次ランダウ準位における二次元電子系の基底状態の相図

    Phys. Rev. Lett.　86　5755-5758　2001

  58. 偏極中性子によるYb4As3の磁場中磁気応答の研究

    J. Magn. Magn. Matter　226,/ 441-443　2001

  59. Thermodynamics of S=1/2 Heisenberg spin chain in transverse staggered fields

    Shibata N., Ueda K.

    Meeting abstracts of the Physical Society of Japan　55　(1)　467-467　2000/03/10

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  60. 有限温度密度行列繰り込み群とその数理

    常次 宏一, 柴田 尚和

    応用数理　10　(3)　218-228　2000/03

    Publisher: The Japan Society for Industrial and Applied Mathematics

    DOI： 10.11540/bjsiam.10.3_218 　

    ISSN： 0917-2270

    More details Close

    We review recently developed numerical algorithm for finite-temperature density-matrix renormalization groups (DMRG). Physical quantities of one-dimensional quantum systems are efficiently calculated by this method. Mathematically, an extreme eigenvalue and its eigenvector can be obtained for non-Hermitian matrices of mammoth size (typically up to 2^<100>) , by reducing to a tractable size: generalization of the original DMRG algorithm proposed for Hermitian matrices. Special focus is on the tensorproduct structure of the vector space and the matrices, which reflects the physics of the original problem, and how and why this method works efficiently is briefly discussed.

  61. 密度行列繰り込み群でみる強相関電子系

    柴田尚和, 上田和夫

    日本物理学会誌　55　(2)　106-112　2000/02

    Publisher: The Physical Society of Japan (JPS)

    DOI： 10.11316/butsuri1946.55.106 　

    ISSN： 0029-0181

  62. 24pYR-1 Crossover behaviors in the doped ID Kondo insulator

    Shibata N, Tsunetsugu H

    Meeting abstracts of the Physical Society of Japan　54　(2)　485-485　1999/09/03

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  63. 29p-F-4 SU(4) symmetric spin-orbit exchange model under magnetic fields

    Yamashita Yasufumi, Shibata Naokazu, Ueda Kazuo

    Meeting abstracts of the Physical Society of Japan　54　(1)　430-430　1999/03/15

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  64. 29p-F-7 Dynamical properties of the doped Kondo insulator

    Shibata N., Tsunetsugu H.

    Meeting abstracts of the Physical Society of Japan　54　(1)　430-430　1999/03/15

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  65. Thermodynamics of doped Kondo insulator in one dimension - Finite-temperature DMRG study

    N Shibata, H Tsunetsugu

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　68　(3)　744-747　1999/03

    DOI： 10.1143/JPSJ.68.744 　

    ISSN： 0031-9015

  66. Dynamic Properties of the One-Dimensional Kondo Insulators Studied by the Density Matrix Renormalization Group Method :

    SHIBATA Naokazu, MUTOU Tetsuya, UEDA Kazuo

    JJAP series　11　103-105　1999

    Publisher: Japanese Journal of Applied Physics

  67. Thermodynamics of doped Kondo insulator in one dimension - Finite-temperature DMRG study

    Naokazu Shibata, Hirokazu Tsunetsugu

    Journal of the Physical Society of Japan　68　(3)　744-747　1999

    Publisher: Physical Society of Japan

    DOI： 10.1143/JPSJ.68.744 　

    ISSN： 0031-9015

  68. 密度行列繰り込み群による近藤格子模型の研究

    J. Phys. : Condens. Matter　11　R1-R30　1999

  69. Dynamic Correlation functions of the One-Dimensional Kondo Lattice Model

    MUTOU Tetsuya, SHIBATA Naokazu, UEDA Kazuo

    Meeting abstracts of the Physical Society of Japan　53　(2)　558-558　1998/09/05

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  70. Calculation of dynamic correlation functions by the finite-temperature DMRG

    SHIBATA N., TSUNETSUGU H.

    Meeting abstracts of the Physical Society of Japan　53　(2)　558-558　1998/09/05

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  71. SU(4)spin-orbit critical state in one-dimension

    YAMASHITA Yasufumi, SHIBATA Naokazu, UEDA Kazuo

    Meeting abstracts of the Physical Society of Japan　53　(2)　559-559　1998/09/05

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  72. 有限温度密度行列繰り込み群の方法

    柴田尚和

    物性研究　70　(5)　607-622　1998/08

  73. Study of one-dimensional Kondo lattice model by the finite temperature DMRG

    SHIBATA N., UEDA K.

    Meeting abstracts of the Physical Society of Japan　53　(1)　428-428　1998/03/10

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  74. Metal-insulator transition in the one-dimensional t-J' model

    MUTOU Tetsuya, SHIBATA Naokazu, UEDA Kazuo

    Meeting abstracts of the Physical Society of Japan　53　(1)　593-593　1998/03/10

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  75. 磁場によるハイゼンベルグ模型の融解

    J. Phys. : Condens. Matter　10　L507-L511　1998

  76. 有限温度密度行列繰り込み群による近藤絶縁体の研究

    J. Phys. Soc. Jpn　67　1086-1089　1998

  77. 28a-L-12 Tomonaga-Luttinger liquid properties of the one dimensional Kondo lattice model

    Shibata N., Tsvelik A., Ueda K.

    Meeting abstracts of the Physical Society of Japan　52　(1)　397-397　1997/03/17

    Publisher: The Physical Society of Japan (JPS)

    ISSN： 1342-8349

  78. 近藤格子模型の大きなフェルミ面

    Physica B　230-232　1024-1027　1997

  79. 有限温度密度行列繰り込み群によるハイゼンベルグスピン鎖の研究

    J. Phys. Soc. Jpn.　66　2221-2223　1997

  80. 近藤格子模型の朝永-ラッティンジャー液体としての性質

    Phys. Rev. B　56　330-334　1997

  81. 近藤格子模型の引力相互作用による量子相転移

    Phys. Rev. B　56　11084-11091　1997

  82. 密度行列繰り込み群の方法

    西野友年, 柴田尚和

    固体物理　32　(1)　12-20　1997/01

    Publisher: アグネ技術センタ-

    ISSN： 0454-4544

  83. Friedel oscillations in the one-dimensional Kondo lattice model

    Shibata Naokazu, Ueda Kazuo, Nishino Tomotoshi, Ishii Chikara

    Abstracts of the meeting of the Physical Society of Japan. Sectional meeting　1996　(3)　228-228　1996/09/13

    Publisher: The Physical Society of Japan (JPS)

  84. 近藤格子

    柴田尚和

    物性研究　65　597-609　1996/08

  85. 31a-YF-3 Spin and charge gaps in the 1D Kondo lattice model with Coulomb interactions

    Shibata Naokazu, Nishino Tomotoshi, Ueda Kazuo, Ishii Chikara

    Abstracts of the meeting of the Physical Society of Japan. Annual meeting　51　(3)　21-21　1996/03/15

    Publisher: The Physical Society of Japan (JPS)

  86. 近藤格子模型におけるフリーデル振動

    Phys. Rev. B　54　13495-13498　1996

  87. 異方的近藤格子模型の量子相転移

    Physica B　223-224　363-365　1996

  88. 近藤半金属におけるデビルズステアケース

    Physica B　223-224　426-428　1996

  89. 異方的近藤格子模型の基底状態の磁気相図

    Phys. Rev. B　51　3626-3631　1995

  90. 3a-Z-12 Ground State Phase Diagram of the Anisotropic Kondo Lattice II

    Shibata Naokazu, Ishii Chikara, Ueda Kazuo

    Abstracts of the meeting of the Physical Society of Japan. Sectional meeting　1994　(3)　60-60　1994/08/16

    Publisher: The Physical Society of Japan (JPS)

  91. 低次元強磁性ハイゼンベルグ模型の熱力学

    J. Phys. Soc. Jpn.　63　1539-1547　1994

  92. 12a-S-1 Phase Diagram of Anisotropic Kondo Lattice

    Shibata Naokazu, Ishii Chikara

    Abstracts of the meeting of the Physical Society of Japan. Sectional meeting　1993　(3)　20-20　1993/09/20

    Publisher: The Physical Society of Japan (JPS)

  93. 13a-H-10 Study of Low-Dimensional Heisenberg Ferromagnet by Green Function Method

    Suzuki Fumihisa, Shibata Naokazu, Ishii Chikara

    Abstracts of the meeting of the Physical Society of Japan. Sectional meeting　1993　(3)　558-558　1993/09/20

    Publisher: The Physical Society of Japan (JPS)

  94. 28a-M-8 Spin-Spin Correlation in the Anderson Lattice : the Effective RKKY spin Lattice

    SHIBATA Naokazu, SHINA Ryosuke, ISHII Chikara

    1992　(3)　164-164　1992/09/14

    Publisher: The Physical Society of Japan (JPS)

Show all ︎Show first 5

Books and Other Publications 2

  1. "テンソルネットワークと物性物理" 数理科学

    柴田尚和

    サイエンス社　2022/02

  2. 物理数学 : 量子力学のためのフーリエ解析・特殊関数

    柴田 尚和, 是常 隆

    共立出版　2021/09

    ISBN: 9784320036161

Presentations 76

  1. 1次元2チャンネル近藤格子模型の有効模型における量子相転移と基底状態

    紅林遊野, 柴田尚和

    日本物理学会 2018年秋季大会　2018/09/11

  2. 捻れた三角スピンチューブにおける有効模型と量子相転移

    飯野千尋, 柴田尚和

    日本物理学会 2018年秋季大会　2018/09/11

  3. 環境と結合した1次元開放量子スピン系の非断熱時間発展とKibble-Zurekスケーリング

    押山広樹, 鈴木正, 柴田尚和

    日本物理学会 2018年秋季大会　2018/09/10

  4. 三角スピンチューブにおけるカイラリティ自由度と残留エントロピー

    飯野千尋, 柴田尚和

    日本物理学会 第73回年次大会　2018/03/23

  5. 1次元2チャンネル近藤格子模型の強結合領域における量子相転移

    紅林遊野, 柴田尚和

    日本物理学会 第73回年次大会　2018/03/23

  6. DMRG法による捻れた三角スピンチューブの量子相転移の解析

    伊藤拓哉, 飯野千尋, 柴田尚和

    日本物理学会 第73回年次大会　2018/03/23

  7. 一次元複不純物系におけるスピン間相互作用と近藤効果

    宮澤渓, 柴田尚和

    日本物理学会 2017年秋季大会　2017/09/23

  8. 1次元2チャンネル近藤格子模型の基底状態相図

    押山広樹, 柴田尚和

    日本物理学会 2017年秋季大会　2017/09/23

  9. 有限温度DMRG法による捻じれた三角スピンチューブ [(CuCl2tachH)3Cl]Cl2の解析

    伊藤拓哉, 柴田尚和

    日本物理学会 2017年秋季大会　2017/09/21

  10. 捻れたスピンチューブの強磁場中有効模型の解析

    飯野千尋, 柴田尚和

    日本物理学会 2017年秋季大会　2017/09/21

  11. グラフェンの分数量子ホール状態におけるバレー構造と質量項の効果

    世永 公揮

    日本物理学会　2017/03/20

  12. 捻れた三角スピンチューブにおけるカイラリティ由来の磁場中比熱

    伊藤 拓哉

    日本物理学会　2017/03/18

  13. エネルギースケールを変調させた実空間繰り込み群による不純物問題の解析

    宮澤 渓

    日本物理学会　2017/03/18

  14. 1次元2チャンネル近藤格子模型における強磁性相

    押山 広樹

    日本物理学会　2017/03/17

  15. S=1/2チェッカーボード格子の多段磁化プラトーと磁気構造

    森田克洋, 柴田尚和

    日本物理学会　2016/09/16

  16. 捻れた三角スピンチューブにおける磁場中低温比熱

    伊藤拓哉, 柴田尚和

    日本物理学会　2016/09/16

  17. 1次元2チャンネル近藤格子模型における量子相転移

    押山広樹, 柴田尚和

    日本物理学会　2016/09/15

  18. ディラック粒子系における分数量子ホール状態の質量項依存性

    世永公輝, 長谷部一気, 柴田尚和

    日本物理学会　2016/09/13

  19. マクロに縮退した非磁性基底状態を持つ新奇S=1/2ハイゼンベルグモデルの厳密解

    森田 克洋

    日本物理学会　2016/03/22

  20. J1-J2正方格子の磁場誘起相転移の研究

    森田克洋

    日本物理学会　2015/09/16

  21. 一次元周期アンダーソン模型における複合粒子金属相

    若目田寛

    日本物理学会　2015/09/16

  22. 一次元近藤格子模型における磁化過程の解析

    石山竜平

    日本物理学会　2015/09/16

  23. Exploring the Microscopic Structure of Charge Ordered Phases in the Third Landau Level using NMR International-presentation

    Trevor David Rhone, Kouki Yonaga, Koji Muraki

    21st International Conference on Electronic Properties of Two-Dimensional Systems　2015/07/26

  24. Analysis on the response to external field by DMRG calculations International-presentation

    Workshop and Symposium on DMRG Technique for Strongly Correlated Systems in Physics and Chemistry　2015/06/22

  25. DMRGによる磁場誘起相転移の計算法と応用例

    日本物理学会　2015/03/21

  26. 捻じれた三角スピンチューブの磁場相図

    世永公輝

    日本物理学会　2015/03/21

  27. SSDを用いたDMRGによる S=1/2 J1-J2 正方格子の解析

    森田克洋

    日本物理学会　2015/03/21

  28. J1-J2正方格子の古典モンテカルロシミュレーションによる解析

    森田克洋

    日本物理学会　2015/03/21

  29. 一次元周期アンダーソン模型における金属 絶縁体転移

    若目田寛

    日本物理学会　2015/03/21

  30. SSDを用いたDMRGによる二次元フラストレート量子スピン系の解析

    森田克洋, 柴田尚和

    日本物理学会　2014/09/07

  31. 一次元近藤格子模型の低電子密度領域における基底状態の相図

    若目田寛, 柴田尚和

    日本物理学会　2014/09/07

  32. 捻じれた三角スピンチューブにおける磁場中のスピン構造

    世永公輝, 柴田尚和

    日本物理学会　2014/03/27

  33. 一次元近藤格子模型の複合粒子金属相

    若目田寛, 柴田尚和

    日本物理学会　2014/03/27

  34. DMRGによる二次元量子スピン系の解析

    森田克洋, 若目田寛, 柴田尚和

    日本物理学会　2014/03/27

  35. 一次元近藤格子の1/6占有率における絶縁相とその周辺の異常金属相

    若目田寛, 柴田尚和

    日本物理学会　2013/09/25

  36. 一次元近藤格子模型における複数の磁化プラトー

    石山竜平, 柴田尚和

    日本物理学会　2013/09/25

  37. Magnetization Plateaus in the One-Dimensional Kondo Lattice Model International-presentation

    Ryuhei Ishiyama, Naokazu Shibata

    International Conference on Strongly Correlated Electron Systems　2013/08/05

  38. Anomalous Metallic Phase in the One-Dimensional Kondo Lattice Model International-presentation

    Hiroshi Wakameda, Naokazu Shibata

    International Conference on Strongly Correlated Electron Systems　2013/08/05

  39. 一次元近藤格子模型における複数の磁化プラトー

    石山竜平, 柴田尚和

    日本物理学会　2013/06/25

  40. グランドカノニカル数値解析法の構造

    堀田知佐, 柴田尚和

    日本物理学会 第68回年次大会　2013/03/26

  41. Fractional quantum Hall states and valley skyrmions in graphene International-presentation

    Naokazu Shibata

    3rd Japan-Israel binational workshop on quantum phenomena　2013/03/10

  42. 一次元近藤格子模型の金属相における電荷感受率の異常な増大

    柴田尚和

    重い電子の形成と秩序化 第4回研究会　2013/01/12

  43. 三角格子およびカゴメ格子のバルク磁化過程：2次元系へのグランドカノニカルDMRG法の適用

    西本理, 堀田知佐, 柴田尚和

    日本物理学会　2012/09/18

  44. N=1ランダウ準位におけるパラフェルミオン状態について

    伊藤透, 野村健太郎, 柴田尚和

    日本物理学会　2012/09/18

  45. 有限系グランドカノニカル数値解析によるバルクな外場応答の取得：DMRGへの適用

    堀田知佐, 柴田尚和

    日本物理学会　2012/09/18

  46. 一次元近藤格子模型における低電子密度領域の金属相の特徴

    若目田寛, 柴田尚和

    日本物理学会　2012/09/18

  47. 一次元近藤格子模型における量子相転移とフェルミ面の変化

    柴田尚和, 堀田知佐

    日本物理学会　2012/03/24

  48. アンチパフィアン状態のエッジ間トンネリングについて

    伊藤透, 野村健太郎, 柴田尚和

    日本物理学会　2012/03/24

  49. 境界条件が長距離揺らぎと量子相転移に及ぼす影響

    柴田尚和, 堀田知佐

    日本物理学会　2011/09/21

  50. RKKY相互作用と近藤効果が競合する系における長距離揺らぎの重要性

    柴田尚和, 堀田知佐

    重い電子系の形成と秩序化 第3回研究会　2011/06/23

  51. スピン軌道相互作用の分数量子ホール系に対する影響

    伊藤透, 野村健太郎, 柴田尚和

    日本物理学会　2010/09/23

  52. Fractional quantum Hall states in graphene International-presentation

    New Trends in Theory of Correlated Materials　2010/09/08

  53. Fractional quantum Hall states of graphene and its bilayer International-presentation

    International Workshop on Density-matrix Renormalization Group and Other Advances on Numerical Renormalization Group Methods　2010/08/28

  54. DMRG study of fractional quantum Hall effect and valley skyrmions in graphene International-presentation

    International Conference on the Application of High Magnetic Fields in Semiconductor Physics and Nanotechnology　2010/08/01

  55. Modulation induced stripe phase at fractional fillings International-presentation

    A. Endo, N. Shibata, Y. Iye

    International Conference on the Application of High Magnetic Fields in Semiconductor Physics and Nanotechnology　2010/08/01

  56. 計算機を利用した物性物理学の可能性

    物性物理学の現状と将来　2010/07/24

  57. ２層量子ホール励起子相境界の相互作用依存性

    吉岡大二郎, 柴田尚和

    日本物理学会　2010/03/20

  58. Entanglement entropy of quantum Hall systems in torus and spherical geometry International-presentation

    米国物理学会 March Meeting　2010/03/15

  59. 密度行列繰り込み群による量子ホール系の研究

    吉岡大二郎先生還暦記念セミナー　2009/11/08

  60. 磁場中2次元系への応用とグラフェンにおける分数量子ホール状態

    日本物理学会　2009/09/25

  61. Fractional quantum Hall states in graphene International-presentation

    New Developments in Strongly Correlated Electron Systems　2009/09/19

  62. Fractional quantum Hall states in 2D electron systems International-presentation

    Matrix Product State Formulation and Density Matrix Renormalization Group Simulations　2009/08/12

  63. Fractional quantum Hall states in single-layer and bilayer graphene International-presentation

    K. Nomura

    Electronic Properties of Two-Dimensional Systems (EP2DS18)　2009/07/19

  64. Collapse of the fractional quantum Hall state by a unidirectional periodic potential modulation International-presentation

    A. Endo, N. Shibata, Y. Iye

    International Conference on Electronic Properties of Two-Dimensional Systems　2009/07/19

  65. 単層および二層グラフェンにおける分数量子ホール状態の階層構造

    日本物理学会　2009/03/27

  66. 二層グラフェンにおける分数量子ホール状態

    K. Nomura

    日本物理学会　2008/09/20

  67. Coupled charge and valley excitations in graphene quantum Hall ferromagnets International-presentation

    Topological Aspects of Solid State Physics　2008/06/23

  68. 強磁場中グラフェンにおけるスカーミオン励起

    日本物理学会　2008/03/23

  69. Bilayer quantum Hall systems International-presentation

    Interaction and Nanostructural Effects in Low-Dimensional Systems　2007/11/05

  70. ν=2およびν=2/3量子ホール系におけるスピンドメインの形成

    日本物理学会　2007/09/21

  71. Excitonic state in bilayer quantum Hall systems International-presentation

    日中セミナー　2007/06/25

  72. v=2/3分数量子ホール状態におけるドメイン形成とスピン間相互作用

    日本物理学会　2007/03/18

  73. Ground state of 2D electrons in high magnetic field studied by the DMRG method International-presentation

    COE International Symposium　2007/03/14

  74. v=2/3分数量子ホール状態におけるスピン構造とドメイン形成

    日本物理学会　2006/09/23

  75. v＝1 二層量子ホール系の基底状態

    柴田尚和, 吉岡大二郎

    日本物理学会　2006/03/27

  76. DMRGの二次元量子系への応用

    繰り込み群ワークショップ　2005/12/02

Show all Show first 5

Research Projects 21

  1. Quantum cosmology experiments in quantum Hall systems

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Transformative Research Areas (A)

    Category: Grant-in-Aid for Transformative Research Areas (A)

    Institution: Tohoku University

    2021/09/10 - 2026/03/31

  2. Nano-Gate Manipulation of Anyon Particles

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2022/04/01 - 2025/03/31

  3. Nano-gate probing of anyon particle

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2022/04/01 - 2025/03/31

  4. Theoretical study on quantum bit in strongly correlated systems

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)

    Category: Grant-in-Aid for Scientific Research (C)

    Institution: Tohoku University

    2019/04/01 - 2024/03/31

  5. Novel quantum space-time on curved Dirac materials and relativistic quantum many-body characteristics

    Hasebe Kazuki

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)

    Category: Grant-in-Aid for Scientific Research (C)

    Institution: Sendai National College of Technology

    2016/04/01 - 2021/03/31

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    We investigated quantum properties of the quantum many-body system on Dirac materials using analytic and nunmerical methods. An important relativistic effect in the quantum many-body system was unveiled in the present study. The relativistic effect acts to the quantum many-body physics in magnetic field as the `parity quantum anomaly’and we pointed out that the parity anomaly brings instability to the Laughlin's many-body ground state. I also investigated the `relativistic’ non-commutative geometry in the context of the Dirac materials imposed on a magnetic field. In this process, a pure quantum geometry that does not have its classical counterpart was newly discovered. I also applied the obtained results to general constructions of the squeezed states in quantum optics and topological solitons in higher dimensions.

  6. Density matrix renormalization group study on quantum systems of multiple degrees of freedom

    Shibata Naokazu

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)

    Category: Grant-in-Aid for Scientific Research (C)

    Institution: Tohoku University

    2014/04/01 - 2017/03/31

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    Various quantum many body states of interacting systems have been studied by the density matrix renormalization group method. Wigner crystal formation and the physical effects of the mass term to the relativistic quantum Hall states have been clarified. The ground state phase diagrams of the twisted three-leg spin tube, J1-J2 Heisenberg model on the square lattice and the checkerboard lattice have also been determined in magnetic fields with many new quantum states.

  7. Theory of exotic quantum order and novel superconductivity emerging from multi degrees of freedom of f electron

    HOTTA Takashi, KUSUNOSE Hiroaki, SHIBATA Naokazu, OSHIKAWA Masaki, KONTANI Hiroshi, KAWAKAMI Norio, KURAMOTO Yoshio, UEDA Kazuo, MIYAKE Kazumasa, OGATA Masao

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

    Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

    Institution: Tokyo Metropolitan University

    2008 - 2012

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    Heavy electron phenomena emerge in rare-earth and actinide compounds, when f electron exhibits huge effective mass which is a few hundred or thousand times as large as the bare electron mass. Thus far, the heavy electron state has been understood by the competition between itinerant and localized nature of f electron. In this research, we have clarified new heavy-electron mechanisms due to multi degrees of freedom such as f-electron orbital and phonon in addition to spin and charge. We have also developed the theory of ordering of multipole as spin-orbital complex, quantum criticality due to valence fluctuations, superconductivity due to anharmonic phonons, and orbital-fluctuation-induced superconductivity in orbital degenerate systems.

  8. 多自由度二次元量子多体系の数値的研究 Competitive

    SHIBATA Naokazu

    Offer Organization: Japan Society for the Promotion of Science

    System: Grant-in-Aid for Scientific Research

    Category: Grant-in-Aid for Young Scientists (A)

    Institution: Tohoku University

    2006/04 - 2009/03

  9. スピン自由度をもつ量子ホール系の密度行列繰り込み群による研究 Competitive

    System: Grant-in-Aid for Scientific Research

    2003/04 - 2006/03

  10. Study on the ground state of bilayer quantum Hall systems

    YOSHIOKA Daijiro, SHIBATA Naokazu

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)

    Category: Grant-in-Aid for Scientific Research (C)

    Institution: The University of Tokyo

    2002 - 2004

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    The object of this study is to clarify how the ground state, excitation spectrum, funneling current develop as interlayer distance, tunneling strength, spin-Zeeman splitting are changed. The methods of study are analytical method, exact diagonalization, and density matrix renormalization (DMRG) method. The development of program of DMRG for the case of bilayer systems is also one of the object of this study. For these objectives we obtained the following results. 1.Bilayer systems in which total filling is an integer with different Landau quantum numbers for each layer. : In this case the system is described by an Ising like model, when the layer index is expressed by pseudospin. It is clarified that at certain separation two types of density wave states are realized distinguished by relative phase of the density wave. 2.Bilayer system at filling one-half. In this case the ground state has various possibilities that include 331 state by Halperin, Pfaffian state, stripe state and Fermi liquid state of composite fermions, depending on the layer separation, thickness of each layer, and tunneling strength. We clarified that for certain separation and thickness corresponding to an experiment, the ground state evolves continuously as tunneling strength is varied, but the lowest excitation change discontinuously from ordinary quasiparticle state to that with non-abelian statistics. This transition explains the strange behavior observed experimentally. 3.Development of DMRG program for bilayer systems : It is not obvious to apply DMRG method to two dimensional systems. We extended our successful DMRG program for singly layer system to bilayer systems. Research of bilayer systems using this program is presently underway. 4.Behavior at large enough separation. We clarified conditions for realization of stripe states. The meaning of "charge" observed by shot noise experiments is clarified.

  11. 密度行列繰り込み群による磁場中の二次元電子系の研究 Competitive

    System: Grant-in-Aid for Scientific Research

    2001/04 - 2003/03

  12. 密度行列繰り込み群による低次元強相関電子系の研究 Competitive

    System: Grant-in-Aid for Scientific Research

    1999/04 - 2001/03

  13. Research on the ground state of non-quantized quantum Hall systems

    YOSHIOKA Daijiro, SHIABATA Naokazu

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)

    Category: Grant-in-Aid for Scientific Research (C)

    Institution: The University of Tokyo

    2000 - 2001

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    The first aim of the research was to obtain an comprehensive understanding as to why states at the same even-denominator filling factor have different ground states at various Landau levels. For this aim we performed investigations using the Hartree-Fock meanfield theory and the density matrix renormalization group (DMRG) study, which gives the most include Fermi liquid state, pairing state, and stripe state. Furthermore we clarified how the ground state evolves as we change the filling factor in the third and fourth lowest Landau levels. The second aim of the research was to obtain an understanding of the orientation of the stripe phase. For this aim we performed Hartree-Fock calculation in the presence of an external periodic potential. We clarified that when the external periodic potential that is originated from the surface morphology has period that is longer than that of the stripe state, the stripes orient themselves perpendicular to the external potential. As the cause of the orientation we identified the tendency towards the Wigner crystallization as the origin. Namely, it causes modulation of the stripe, and forms an energy gap at the Fermi level. Then compressibility acquires anisotropy that causes the orientation of the stripe. Furthermore, we investigated how the pairing state in the second lowest Landau level evolves when the layer separation is increased in a bi-layer systems. Thus we obtained an phase diagram on the layer-separation and the inter-layer tunneling strength. Apart from these investigations, we investigated the ground state at total filling one. For these investigations we obtained various new findings. We are planning to publish these results in the near future.

  14. Numerical Study on Strongly Correlated Electron Systems with Parallel Computers

    TSUNETSUGU Hirokazu, MOTOME Yukitoshi, SHIBATA Nokazu

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)

    Category: Grant-in-Aid for Scientific Research (C)

    Institution: University of Tsukuba

    1999 - 2000

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    In this research project, we have performed large-scale numerical study on the ground state and thermodynamic properties of strongly correlated electron systems. Parallel computers with several hundreds of nodes, supercomputers with high vectorization performance, and workstation clusters are used to carry on various types of numerical simulations. Summary of the obtained results is the following. The one-dimensional Kondo lattice model is studied by the density-matrix renormalization-group method. We have calculated the dynamic correlation function of local spin and charge correlations for the hole doped case. We find small new energy scales upon hole doping, and we discuss the relationship between these energy scales and collective excitations in the luttinger-liquid ground state. We also demonstrate the competition between the RKKY interaction of local spins and the Kondo screening due to itinerant electrons, based on the results of the antiferromagnetic spin susceptibility. We have calculated the single-electron spectrum and pairing correlations in the two-dimensional t-J model, to study the correlation of (π, 0) level and the d-wave superconductivity. We show that the superconductivity could be enhanced by level tuning of the (π, 0) level to the Fermi energy by artificial design of electron hoppings. We have performed the quantum Monte-Carlo parallel simulations on the three-dimensional double exchange model using large-scale workstation/PC clusters. The critical exponent of ferromagnetic transition in this model is determined. We have developed and improved various routines and tools for parallelized numerical diagonalization of the t-J model.

  15. Theoretical Study on Quantum Phase Transition between Spin Liquid and Magnetic Order

    TSUNETSUGU Hirokazu, SHIBATA Naokazu

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)

    Category: Grant-in-Aid for Scientific Research (C)

    Institution: University of Tsukuba

    1997 - 1998

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    We have carried out theoretical investigations for the quantum phase transition between the spin-liquid and magnetically ordered phases. As well as the magnetic properties, effects on the charge dynamics have been studied. To this end, numerical calculations have been performed on three microscopic models : two-leg ladder system, the one-dimensional Kondo lattice, and the two-dimensional t-J model including additional electron-pair hopping processes. To study the metallic spin-liquid phase, we have calculated the optical conductivity of the two-leg t-J ladder model at finite temperatures. The results show that its frequency dependence indicates an incoherent character similar to the two dimensional case at high temperatures. With decreasing temperature, an incoherent-to-coherent crossover takes place with accompanied by a pseudogap formation. This crossover is determined by the energy scale of the spin gap. The electron dynamics in the two dimensions has been studied by calculating the Drude weight at zero temperature. The calculation was performed for the t-J model including electron-pair hopping processes. We have found that the conventional t-J model has the dynamic exponent, z=4, which dominates the incoherent dynamics observed near the metal- insulator transition. On the other hand, when the electron-pair hoppings are switched on, the dynamic exponent is z=2 and the electron dynamics recovers coherence. The one-dimensional Kondo lattice model has been studied to see the critical behavior associated with hole doping for the spin-liquid state at half filling. Thermodynamics and local dynamic correlations have been calculated with the finite-temperature density-matrix renormalization-group method : We have found that the spin gap at half filling persists upon hole doping as the crossover energy scale dominating the local singlet formation. It is also found that a new energy scale appears in the lower energy region and it is determined by the energy scale of the Luttinger liquid ground state.

  16. 分数量子ホール効果に関する数値的研究 Competitive

  17. 強相関電子系に関する数値的研究 Competitive

  18. Numerical Study on Fractional Quantum Hall Effect Competitive

  19. Numerical Study on Low Dimensional Systems Competitive

  20. Numerical Study on Strongly Correlated Electron Systems Competitive

  21. 低次元電子系の数値的研究 Competitive

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Social Activities 28

  1. 仙台高専インターンシップ受け入れ

    2017/09/01 - 2017/10/31

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    仙台高専より専攻科の学生を二ヶ月間インターンシップとして受け入れ、研究指導を行った。

  2. 多賀城市立多賀城中学校 職場訪問対応

    2017/10/24 - 2017/10/25

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    東北大学および理学研究科の紹介と気象データ解析、円周率の計算、水素原子軌道の計算の実習

  3. 仙台高専インターンシップ受け入れ

    2010/08/09 - 2010/09/06

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    平成２２年度ものづくり分野の人材育成・確保事業の一環として仙台電波高専より専攻科の学生を１ヵ月程度受け入れ、研究指導をボランティアで行った。

  4. (その他) 高校教員との懇談会

    2024/03/29 -

  5. (大学訪問対応等) 宮城第一高等学校 大学訪問 理学部概要説明

    2023/06/20 -

  6. (その他) 栃木県立矢板東高等学校とのオンライン交流会

    オンライン交流会

    2023/03/18 -

  7. (出前授業等) 静岡県立掛川西高等学校大学模擬講義, 量子の世界-素粒子から宇宙まで-

    大学模擬講義

    2022/09/08 -

  8. (大学訪問対応等) 京都市立堀川高等学校学校訪問対応, 理学部の研究概要説明

    大学訪問

    2022/06/23 -

  9. (公開講座) ぶらりがくfor ハイスクール, 高校生向けの講義のライブ配信

    ぶらりがくfor ハイスクール

    2022/03/25 -

  10. 茨城県立水戸第一高等学校 学校訪問対応

    2017/11/10 -

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    理学部の歴史と研究概要説明

  11. 新潟県立新発田南高等学校 学校訪問対応

    2017/10/17 -

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    理学部の歴史と研究概要説明

  12. 宮城県高校生と保護者への学校訪問対応

    2017/08/10 -

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    理学部の概要と研究紹介

  13. 秋田市立御所野学院高等学校 学校訪問対応

    2017/08/07 -

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    理学部の歴史と研究概要説明

  14. 全国高等学校総合文化祭 巡検研修

    2017/08/03 -

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    全国高等学校総合文化祭巡検研修として理学部の研究紹介と研究者になるまでのキャリアパキャリアパスの説明を行なった。

  15. 山形県小国小学校 学校訪問対応

    2017/05/26 -

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    理学部研究概要説明

  16. 群馬県伊勢崎市高校生 学校訪問対応

    2017/04/28 -

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    理学部研究概要説明

  17. 茗溪学園高等学校 学校訪問対応

    2016/06/13 -

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    理学部研究概要説明

  18. 青森県三本木高校付属中学 学校訪問対応

    2016/05/26 -

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    理学部研究概要説明

  19. 福島県常葉中学校 上級学校訪問対応

    2016/05/19 -

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    東北大学および理学研究科の紹介と 参加者からの質問に対する回答

  20. 新庄市立日新中学校 上級学校訪問対応

    2015/11/13 -

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    東北大学および理学研究科の紹介と 参加者からの質問に対する回答

  21. 白石高校 職場訪問対応

    2015/09/03 -

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    東北大学および理学研究科の紹介と 参加者からの質問に対する回答

  22. 磐城高等学校

    2015/04/23 -

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    理学部紹介と体験講義

  23. 石巻市立蛇田中学校の学校訪問

    2015/04/23 -

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    理学部の紹介、質疑応答、中学生に向けてのメッセージ

  24. NTTなど、NMRを用いて高純度半導体における電子の結晶化の観測に成功

    2014/07/23 -

  25. NTTとJST、高純度半導体における電子の結晶化の観測に成功

    2014/07/21 -

  26. ＮＴＴとＪＳＴ、電子が結晶化する様子を世界初観測－新しい物性開拓に期待

    2014/07/21 -

  27. 零磁場で「スピン液体」籠の目磁性体で発見

    2013/08/06 -

  28. 東北大など、カゴメ磁性体モデルで磁場に無反応状態の磁化プラトーを発見

    2013/08/06 -

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Other 3

  1. 分数量子ホール系の端状態の研究

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    試料端における分数量子ホール系端状態の微視的な電子構造を明らかにする.

  2. 高ランダウ準位における電荷密度波状態の研究

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    主に第二励起ランダウ準位に現れる電荷密度波状態のミクロな構造を、抵抗検出核磁気共鳴の実験と理論計算の比較によって明らかにする。

  3. 強磁場中２次元電子の電荷密度波状態の研究

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    主に第二励起ランダウ準位に現れる電荷密度波状態のミクロな構造を、抵抗検出核磁気共鳴の実験と理論計算の比較によって明らかにする。