Inelastic Electron Transport and Ortho–Para Fluctuation of Water Molecule in H₂O@C₆₀ Single Molecule Transistors Peer-reviewed

Shaoqing Du, Yoshifumi Hashikawa, Haruka Ito, Katsushi Hashimoto, Yasujiro Murata, Yoshiro Hirayama, Kazuhiko Hirakawa

Nano Letters　21　(24)　10346-10353　2021/12/22

DOI： 10.1021/acs.nanolett.1c03604 　

ISSN： 1530-6984

eISSN： 1530-6992

Wigner solids of domain wall skyrmions

Kaifeng Yang, Katsumi Nagase, Yoshiro Hirayama, Tetsuya D. Mishima, Michael B. Santos, Hongwu Liu

Nature Communications　12　(1)　2021/12/01

DOI： 10.1038/s41467-021-26306-8 　

ISSN： 2041-1723

Imaging disorder-induced scattering centers in quantum Hall incompressible strip

Y. H. Wang, K. Hashimoto, T. Tomimatsu, Y. Hirayama

Physical Review B　103　(8)　2021/02/19

DOI： 10.1103/PhysRevB.103.085308 　

ISSN： 2469-9950

eISSN： 2469-9969

Large Zeeman Splitting in Out-of-Plane Magnetic Field in a Double-Layer Quantum Point Contact

Daiju Terasawa, Shota Norimoto, Tomonori Arakawa, Meydi Ferrier, Akira Fukuda, Kensuke Kobayashi, Yoshiro Hirayama

Journal of the Physical Society of Japan　90　(2)　024709-024709　2021/02/15

DOI： 10.7566/jpsj.90.024709 　

ISSN： 0031-9015

eISSN： 1347-4073

Magnetotransport of electrically induced two-dimensional hole gases in undoped GaSb quantum wells

Kenji Shibata, Matija Karalic, Christopher Mittag, Thomas Tschirky, Christian Reichl, Hiromu Ito, Katsushi Hashimoto, Toru Tomimatsu, Yoshiro Hirayama, Werner Wegscheider, Thomas Ihn, Klaus Ensslin

Physical Review Research　2　(3)　2020/09/09

DOI： 10.1103/physrevresearch.2.033383 　

eISSN： 2643-1564

Probing the breakdown of topological protection: Filling-factor-dependent evolution of robust quantum Hall incompressible phases Peer-reviewed

Toru Tomimatsu, Katsushi Hashimoto, Shyunsuke Taninaka, Nomura Shintaro, Yoshiro Hirayama

Phys. Rev. Res.　2　(1)　013128　2020/02

Resistively detected NMR in a triple-gate quantum point contact: Magnetic field dependence

Annisa Noorhidayati, Mohammad Hamzah Fauzi, Muhammad Fauzi Sandan, Shunta Maeda, Ken Sato, Katsumi Nagase, Yoshiro Hirayama

PHYSICAL REVIEW B　101　(3)　2020/01

DOI： 10.1103/PhysRevB.101.035425 　

ISSN： 2469-9950

eISSN： 2469-9969

Pump-probe nuclear spin relaxation study of the quantum Hall ferromagnet at filling factor nu=2

K. F. Yang, M. M. Uddin, K. Nagase, T. D. Mishima, M. B. Santos, Y. Hirayama, Z. N. Yang, H. W. Liu

NEW JOURNAL OF PHYSICS　21　2019/08

DOI： 10.1088/1367-2630/ab34ce 　

ISSN： 1367-2630

Electric-field-induced two-dimensional hole gas in undoped GaSb quantum wells Peer-reviewed

K. Shibata, M. Karalic, C. Mittag, T. Tschirky, C. Reichl, H. Ito, K. Hashimoto, T. Tomimatsu, Y. Hirayama, W. Wegscheider, T. Ihn, K. Ensslin

114　232102　2019/05

Real space imaging of the quantum-Hall incompressible states influenced by the strong disorder

Yihao Wang, Katsushi Hashimoto, Yoshiro Hirayama

2019 COMPOUND SEMICONDUCTOR WEEK (CSW)　2019

Resistively detected-NMR in triple-gate quantum point contact: magnetic field dependence

Annisa Noorhidayati, Mohammad Hamzah Fauzi, Shunta Maeda, Ken Sato, Katsumi Nagse, Yoshiro Hirayama

2019 COMPOUND SEMICONDUCTOR WEEK (CSW)　2019

Scanning nuclear resonance imaging of a hyperfine-coupled quantum Hall system. International-journal

Katsushi Hashimoto, Toru Tomimatsu, Ken Sato, Yoshiro Hirayama

Nature communications　9　(1)　2215-2215　2018/06/07

DOI： 10.1038/s41467-018-04612-y 　

Scanning nuclear resonance imaging of a hyperfine-coupled quantum Hall system

Katsushi Hashimoto, Toru Tomimatsu, Ken Sato, Yoshiro Hirayama

NATURE COMMUNICATIONS　9　2018/06

DOI： 10.1038/s41467-018-04612-y 　

ISSN： 2041-1723

Dynamic nuclear polarization at high Landau levels in a quantum point contact Peer-reviewed

Fauzi M. H, Noorhidayati A, Sahdan M. F, Sato K, Nagase K, Hirayama Y

PHYSICAL REVIEW B　97　(20)　2018/05/29

DOI： 10.1103/PhysRevB.97.201412 　

ISSN： 2469-9950

Resistively detected NMR line shapes in a quasi-one-dimensional electron system Peer-reviewed

M. H. Fauzi, A. Singha, M. F. Sahdan, M. Takahashi, K. Sato, K. Nagase, B. Muralidharan, Y. Hirayama

PHYSICAL REVIEW B　95　(24)　241404-1-241404-5　2017/06

DOI： 10.1103/PhysRevB.95.241404 　

ISSN： 2469-9950

eISSN： 2469-9969

Detection and Control of Spin-Orbit Interactions in a GaAs Hole Quantum Point Contact Peer-reviewed

A. Srinivasan, D. S. Miserev, K. L. Hudson, O. Klochan, K. Muraki, Y. Hirayama, D. Reuter, A. D. Wieck, O. P. Sushkov, A. R. Hamilton

PHYSICAL REVIEW LETTERS　118　(14)　146801-1-146801-5　2017/04

DOI： 10.1103/PhysRevLett.118.146801 　

ISSN： 0031-9007

eISSN： 1079-7114

Role of chiral quantum Hall edge states in nuclear spin polarization Peer-reviewed

Kaifeng Yang, Katsumi Nagase, Yoshiro Hirayama, Tetsuya D. Mishima, Michael B. Santos, Hongwu Liu

NATURE COMMUNICATIONS　8　15084-1-15084-7　2017/04

DOI： 10.1038/ncomms15084 　

ISSN： 2041-1723

Manipulation of a Nuclear Spin by a Magnetic Domain Wall in a Quantum Hall Ferromagnet Peer-reviewed

M. Korkusinski, P. Hawrylak, H. W. Liu, Y. Hirayama

SCIENTIFIC REPORTS　7　43553-1-43553-7　2017/03

DOI： 10.1038/srep43553 　

ISSN： 2045-2322

Landauer-Buttiker approach for hyperfine mediated electronic transport in the integer quantum Hall regime Peer-reviewed

Aniket Singha, M. H. Fauzi, Y. Hirayama, Bhaskaran Muralidharan

PHYSICAL REVIEW B　95　(11)　115416-1-115416-17　2017/03

DOI： 10.1103/PhysRevB.95.115416 　

ISSN： 2469-9950

eISSN： 2469-9969

Fabry-Perot interference in a triple-gated quantum point contact Peer-reviewed

S. Maeda, S. Miyamoto, M. H. Fauzi, K. Nagase, K. Sato, Y. Hirayama

APPLIED PHYSICS LETTERS　109　(14)　143509-1-143509-4　2016/10

DOI： 10.1063/1.4964404 　

ISSN： 0003-6951

eISSN： 1077-3118

Simultaneous measurement of resistively and optically detected nuclear magnetic resonance in the v=2/3 fractional quantum Hall regime Peer-reviewed

Keiichirou Akiba, Katsumi Nagase, Yoshiro Hirayama

PHYSICAL REVIEW B　94　(8)　081104-1-081104-5　2016/08

DOI： 10.1103/PhysRevB.94.081104 　

ISSN： 2469-9950

eISSN： 2469-9969

Electrical control of the sign of the g factor in a GaAs hole quantum point contact Peer-reviewed

A. Srinivasan, K. L. Hudson, D. Miserev, L. A. Yeoh, O. Klochan, K. Muraki, Y. Hirayama, O. P. Sushkov, A. R. Hamilton

PHYSICAL REVIEW B　94　(4)　041406-1-041406-5　2016/07

DOI： 10.1103/PhysRevB.94.041406 　

ISSN： 2469-9950

eISSN： 2469-9969

Scanning nuclear electric resonance microscopy using quantum-Hall-effect breakdown Peer-reviewed

K. Hashimoto, T. Tomimatsu, S. Shirai, S. Taninaka, K. Nagase, K. Sato, Y. Hirayama

AIP ADVANCES　6　(7)　075024-1-075024-6　2016/07

DOI： 10.1063/1.4960430 　

ISSN： 2158-3226

Localized NMR Mediated by Electrical-Field-Induced Domain Wall Oscillation in Quantum-Hall-Ferromagnet Nanowire Peer-reviewed

S. Miyamoto, T. Miura, S. Watanabe, K. Nagase, Y. Hirayama

NANO LETTERS　16　(3)　1596-1601　2016/03

DOI： 10.1021/acs.nanolett.5b04209 　

ISSN： 1530-6984

eISSN： 1530-6992

Dicke model for quantum Hall systems Peer-reviewed

Y. Hama, M. H. Fauzi, K. Nemoto, Y. Hirayama, Z. F. Ezawa

NEW JOURNAL OF PHYSICS　18　023027-1-023027-10　2016/02

DOI： 10.1088/1367-2630/18/2/023027 　

ISSN： 1367-2630

21pPSB-32 The electrical transport characteristics of a quantum point contact with a triple gate structure

Takahashi M., Fauzi H. M., Nagase K., Sato K., Hirayama Y.

Meeting Abstracts of the Physical Society of Japan　71　1386-1386　2016

DOI： 10.11316/jpsgaiyo.71.1.0_1386 　

ISSN： 2189-079X

22aAG-1 Transport characteristics of InSb quantum point contacts in a parallel magnetic field

Masuda T., Sekine K., Fauzi M. H., Nagase K., Wickramasinghe K. S., Mishima T. D., Santos M. B., Hirayama Y.

Meeting Abstracts of the Physical Society of Japan　71　1402-1402　2016

DOI： 10.11316/jpsgaiyo.71.1.0_1402 　

ISSN： 2189-079X

Electron spin polarization by using resistively-detected NMR based on a quantum Hall effect breakdown

Higashida Rei, Hashimoto Katsushi, Shirai Shota, Hirayama Yoshiro

Meeting Abstracts of the Physical Society of Japan　71　1040-1040　2016

DOI： 10.11316/jpsgaiyo.71.2.0_1040 　

Nuclear spin resonance imaging by using twice the resonance frequency

Hashimoto Katsushi, Tomimatsu Toru, Taninaka Shyunsuke, Sato Ken, Hirayama Yoshiro

Meeting Abstracts of the Physical Society of Japan　71　1041-1041　2016

DOI： 10.11316/jpsgaiyo.71.2.0_1041 　

Controlled one-dimensional channel in a quantum point contact with a triple-gate structure Peer-reviewed

Motoi Takahashi, Mohammad Hamzah Fauzi, Shunta Maeda, Katsumi Nagase, Ken Sato, Yoshiro Hirayama

2016 COMPOUND SEMICONDUCTOR WEEK (CSW) INCLUDES 28TH INTERNATIONAL CONFERENCE ON INDIUM PHOSPHIDE & RELATED MATERIALS (IPRM) & 43RD INTERNATIONAL SYMPOSIUM ON COMPOUND SEMICONDUCTORS (ISCS)　2016

Local Strain Engineering in Monolayer MoS2 Peer-reviewed

Wataru Tomita, Katsushi Hashimoto, Ziqian Wang, Mingwei Chen, Yoshiro Hirayama

2016 COMPOUND SEMICONDUCTOR WEEK (CSW) INCLUDES 28TH INTERNATIONAL CONFERENCE ON INDIUM PHOSPHIDE & RELATED MATERIALS (IPRM) & 43RD INTERNATIONAL SYMPOSIUM ON COMPOUND SEMICONDUCTORS (ISCS)　2016

Quantum state tomography of large nuclear spins in a semiconductor quantum well: Optimal robustness against errors as quantified by condition numbers Peer-reviewed

Adam Miranowicz, Sahin K. Özdemir, Jiří Bajer, Go Yusa, Nobuyuki Imoto, Yoshiro Hirayama, Franco Nori

Physical Review B - Condensed Matter and Materials Physics　92　(7)　2015/08/27

DOI： 10.1103/PhysRevB.92.075312 　

ISSN： 1098-0121

eISSN： 1550-235X

Comparison of nuclear electric resonance and nuclear magnetic resonance in integer and fractional quantum Hall states Peer-reviewed

Toru Tomimatsu, Shota Shirai, Katsushi Hashimoto, Ken Sato, Yoshiro Hirayama

AIP ADVANCES　5　(8)　087156-1-087156-6　2015/08

DOI： 10.1063/1.4929477 　

ISSN： 2158-3226

Quantum state tomography of large nuclear spins in a semiconductor quantum well: Optimal robustness against errors as quantified by condition numbers Peer-reviewed

Adam Miranowicz, Sahin K. Oezdemir, Jiri Bajer, Go Yusa, Nobuyuki Imoto, Yoshiro Hirayama, Franco Nori

PHYSICAL REVIEW B　92　(7)　075312-1-075312-18　2015/08

DOI： 10.1103/PhysRevB.92.075312 　

ISSN： 2469-9950

eISSN： 2469-9969

Optically Induced Nuclear Spin Polarization in the Quantum Hall Regime: The Effect of Electron Spin Polarization through Exciton and Trion Excitations Peer-reviewed

K. Akiba, S. Kanasugi, T. Yuge, K. Nagase, Y. Hirayama

PHYSICAL REVIEW LETTERS　115　(2)　026804-1-026804-5　2015/07

DOI： 10.1103/PhysRevLett.115.026804 　

ISSN： 0031-9007

eISSN： 1079-7114

Valley polarization assisted spin polarization in two dimensions Peer-reviewed

V. T. Renard, B. A. Piot, X. Waintal, G. Fleury, D. Cooper, Y. Niida, D. Tregurtha, A. Fujiwara, Y. Hirayama, K. Takashina

NATURE COMMUNICATIONS　6　1-8　2015/06

DOI： 10.1038/ncomms8230 　

ISSN： 2041-1723

Radiative properties of multicarrier bound excitons in GaAs Peer-reviewed

Todd Karin, Russell J. Barbour, Charles Santori, Yoshihisa Yamamoto, Yoshiro Hirayama, Kai-Mei C. Fu

PHYSICAL REVIEW B　91　(16)　165204-1-165204-12　2015/04

DOI： 10.1103/PhysRevB.91.165204 　

ISSN： 2469-9950

eISSN： 2469-9969

Band Shift, Band Filling, and Electron Localization in a Quantum Wire Detected via Tunneling between Parallel Quantum Wires Peer-reviewed

Michihisa Yamamoto, Yasuhiro Tokura, Yoshiro Hirayama, Seigo Tarucha

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　84　(3)　033710-1-033710-4　2015/03

DOI： 10.7566/JPSJ.84.033710 　

ISSN： 0031-9015

Anisotropic nuclear-spin diffusion in double quantum wells Peer-reviewed

T. Hatano, W. Kume, S. Watanabe, K. Akiba, K. Nagase, Y. Hirayama

PHYSICAL REVIEW B　91　(11)　115318-1-115318-7　2015/03

DOI： 10.1103/PhysRevB.91.115318 　

ISSN： 1098-0121

eISSN： 1550-235X

19aAE-2 Scanning nuclear spin resonance microscopy of Knight shift in quantum Hall breakdown

Hashimoto K., Taninaka S., Shirai S., Tomimatsu T., Nagase K., Sato K., Hirayama Y.

Meeting Abstracts of the Physical Society of Japan　70　1129-1129　2015

DOI： 10.11316/jpsgaiyo.70.2.0_1129 　

ISSN： 2189-079X

19aAE-1 Scanning gate microscopy of electron transport in the quantum Hall effect breakdown regime

Taninaka S., Hashimoto K., Shirai S., Nagase K., Sato K., Hirayama Y.

Meeting Abstracts of the Physical Society of Japan　70　1128-1128　2015

DOI： 10.11316/jpsgaiyo.70.2.0_1128 　

ISSN： 2189-079X

23pPSB-5 Estimation of electron spin polarization from singlet trion photoluminescence in quantum Hall regime

Akiba K., Yuge T., Nagase K., Hirayama Y.

Meeting Abstracts of the Physical Society of Japan　70　1385-1385　2015

DOI： 10.11316/jpsgaiyo.70.1.0_1385 　

ISSN： 2189-079X

Atomic force microscope-assisted scanning tunneling spectroscopy under ambient conditions Peer-reviewed

Amin Vakhshouri, Katsushi Hashimoto, Yoshiro Hirayama

MICROSCOPY　63　(6)　475-479　2014/12

DOI： 10.1093/jmicro/dfu028 　

ISSN： 2050-5698

eISSN： 2050-5701

Nuclear magnetometry studies of spin dynamics in quantum Hall systems Peer-reviewed

M. H. Fauzi, S. Watanabe, Y. Hirayama

PHYSICAL REVIEW B　90　(23)　235308-1-235308-8　2014/12

DOI： 10.1103/PhysRevB.90.235308 　

ISSN： 1098-0121

eISSN： 1550-235X

Mechanical resonance characteristics of a cylindrical semiconductor heterostructure containing a high-mobility two-dimensional electron gas Peer-reviewed

H. Okamoto, W. Izumida, Y. Hirayama, H. Yamaguchi, A. Riedel, K. -J. Friedland

PHYSICAL REVIEW B　89　(24)　245304-1-245304-8　2014/06

DOI： 10.1103/PhysRevB.89.245304 　

ISSN： 1098-0121

eISSN： 1550-235X

Electrical control of tunnel coupling in vertically coupled quantum point contacts

S. Ichinokura, T. Hatano, W. Izumida, K. Nagase, Y. Hirayama

Meeting Abstracts of the Physical Society of Japan　69　(1)　687-687　2014/03/05

Photoluminescence fine structures in the fractional quantum Hall effect regime Peer-reviewed

S. Nomura, M. Yamaguchi, H. Tamura, T. Akazaki, Y. Hirayama, M. Korkusinski, P. Hawrylak

PHYSICAL REVIEW B　89　(11)　115317-1-115317-6　2014/03

DOI： 10.1103/PhysRevB.89.115317 　

ISSN： 1098-0121

eISSN： 1550-235X

Spin and valley polarization dependence of resistivity in two dimensions Peer-reviewed

K. Takashina, Y. Niida, V. T. Renard, B. A. Piot, D. S. D. Tregurtha, A. Fujiwara, Y. Hirayama

PHYSICAL REVIEW B　88　(20)　201301-1-201301-5　2013/11

DOI： 10.1103/PhysRevB.88.201301 　

ISSN： 1098-0121

eISSN： 1550-235X

Gate depletion of an InSb two-dimensional electron gas Peer-reviewed

M. M. Uddin, H. W. Liu, K. F. Yang, K. Nagase, K. Sekine, C. K. Gaspe, T. D. Mishima, M. B. Santos, Y. Hirayama

Applied Physics Letters　103　(12)　123502-1-123502-4　2013/09/16

DOI： 10.1063/1.4821106 　

ISSN： 0003-6951

Pump-probe nuclear magnetic resonance measurement in quantum Hall effect breakdown regime Peer-reviewed

T. Tomimatsu, K. Hashimoto, K. Sato, Y. Hirayama

Applied Physics Letters　103　(8)　082108-1-082108-4　2013/08/19

DOI： 10.1063/1.4819000 　

ISSN： 0003-6951

Electrical control of tunnel coupling between vertically coupled quantum point contacts Peer-reviewed

S. Ichinokura, T. Hatano, W. Izumida, K. Nagase, Y. Hirayama

APPLIED PHYSICS LETTERS　103　(6)　062106-1-062106-4　2013/08

DOI： 10.1063/1.4817937 　

ISSN： 0003-6951

Optically induced nuclear spin polarization in a single GaAs/AlGaAs quantum well probed by a resistance detection method in the fractional quantum Hall regime Peer-reviewed

K. Akiba, T. Yuge, S. Kanasugi, K. Nagase, Y. Hirayama

Physical Review B - Condensed Matter and Materials Physics　87　(23)　235309-1-235309-7　2013/06/18

DOI： 10.1103/PhysRevB.87.235309 　

ISSN： 1098-0121 1550-235X

Optically induced nuclear spin polarization in a single GaAs/AlGaAs quantum well probed by a resistance detection method in the fractional quantum Hall regime Peer-reviewed

K. Akiba, T. Yuge, S. Kanasugi, K. Nagase, Y. Hirayama

Physical Review B - Condensed Matter and Materials Physics　87　(23)　235309-1-235309-7　2013/06/18

DOI： 10.1103/PhysRevB.87.235309 　

ISSN： 1098-0121 1550-235X

Metallic behaviour in SOI quantum wells with strong intervalley scattering Peer-reviewed

V. T. Renard, I. Duchemin, Y. Niida, A. Fujiwara, Y. Hirayama, K. Takashina

SCIENTIFIC REPORTS　3　2011-1-2011-5　2013/06

DOI： 10.1038/srep02011 　

ISSN： 2045-2322

Electron and hole mobilities at a Si/SiO2 interface with giant valley splitting Peer-reviewed

Yoshitaka Niida, Kei Takashina, Yukinori Ono, Akira Fujiwara, Yoshiro Hirayama

APPLIED PHYSICS LETTERS　102　(19)　191603-1-191603-4　2013/05

DOI： 10.1063/1.4803014 　

ISSN： 0003-6951

26aXQ-3 Interawell and Interwell photoluminescence from two-dimensional electron system in gated asymmetric quantum wells

Nomura,S, Yamaguchi,M, Tamura,H, Akazaki,T, Hirayama,Y

Meeting abstracts of the Physical Society of Japan　68　(1)　742　2013/03

ISSN： 1342-8349

Exchange energy enhanced g-factors obtained from Landau fan diagrams at low magnetic fields Peer-reviewed

S. Nomura, H. Tamura, M. Yamaguchi, T. Akazaki, Y. Hirayama

PHYSICAL REVIEW B　87　(8)　085318-1-085318-6　2013/02

DOI： 10.1103/PhysRevB.87.085318 　

ISSN： 1098-0121

Nuclear-Spin Observation of Noise Spectra in Semiconductors Peer-reviewed

Susumu Sasaki, Tatsuro Yuge, Masashi Nishimori, Takashi Kawanago, Yoshiro Hirayama

PHYSICS OF SEMICONDUCTORS　1566　558-+　2013

DOI： 10.1063/1.4848533 　

ISSN： 0094-243X

Spin phase transition studies to probe spin dynamics in quantum Hall system Peer-reviewed

M. H. Fauzi, S. Watanabe, Y. Hirayama

Journal of Physics: Conference Series　456　(1)　012010-1-012010-3　2013

DOI： 10.1088/1742-6596/456/1/012010 　

ISSN： 1742-6596 1742-6588

Characterization of InSb quantum wells with atomic layer deposited gate dielectrics Peer-reviewed

M. M. Uddin, H. W. Liu, K. F. Yang, K. Nagase, T. D. Mishima, M. B. Santos, Y. Hirayama

APPLIED PHYSICS LETTERS　101　(23)　233503-1-233503-4　2012/12

DOI： 10.1063/1.4769225 　

ISSN： 0003-6951

Microscopic characteristics of dynamic nuclear polarization and selective nuclear depolarization at the nu=2/3 spin phase transition Peer-reviewed

M. H. Fauzi, S. Watanabe, Y. Hirayama

APPLIED PHYSICS LETTERS　101　(16)　162105-1-162105-3　2012/10

DOI： 10.1063/1.4761955 　

ISSN： 0003-6951

Robust Nodal Structure of Landau Level Wave Functions Revealed by Fourier Transform Scanning Tunneling Spectroscopy Peer-reviewed

K. Hashimoto, T. Champel, S. Florens, C. Sohrmann, J. Wiebe, Y. Hirayama, R. A. Roemer, R. Wiesendanger, M. Morgenstern

PHYSICAL REVIEW LETTERS　109　(11)　116805-1-116805-5　2012/09

DOI： 10.1103/PhysRevLett.109.116805 　

ISSN： 0031-9007

Conductance plateaus in vertically coupled quantum point contacts

S. Ichinokura, T. Hatano, W. Izumida, K. Nagase, Y. Hirayama

Meeting Abstracts of the Physical Society of Japan　67　(2)　652-652　2012/08/24

Electron filling factor dependent enhancement of g factor in low magnetic field and low electron density

Nomura,S, Yamaguchi,M, Tamura,H, Akazaki,T, Hirayama,Y

Meeting abstracts of the Physical Society of Japan　67　(2)　614　2012/08

ISSN： 1342-8349

Resistively detected nuclear magnetic resonance: recent developments Invited Peer-reviewed

Liu Hong-Wu, Yang Kai-Feng, Tetsuya D. Mishima, Michael B. Santos, Katsumi Nagase, Yoshiro Hirayama

ACTA PHYSICA SINICA　61　(14)　147302-1-147302-12　2012/07

ISSN： 1000-3290

All electrical probe of nuclear spin polarization and relaxation by spin phase transition peaks of the filling fraction nu=2/3 quantum hall effect Peer-reviewed

M. H. Fauzi, S. Watanabe, N. Kumada, Y. Hirayama

JOURNAL OF THE KOREAN PHYSICAL SOCIETY　60　(10)　1676-1679　2012/05

DOI： 10.3938/jkps.60.1676 　

ISSN： 0374-4884

Electronic transport property in vertically coupled quantum point contacts

S. Ichinokura, T. Hatano, W. Izumida, K. Nagase, Y. Hirayama

Meeting Abstracts of the Physical Society of Japan　67　(1)　758-758　2012/03/05

Temperature dependence of Fine structures in photoluminescence spectra in the FQHE regime

Nomura,S, Yamaguchi,M, Tamura,H, Akazaki,T, Hirayama,Y

Meeting abstracts of the Physical Society of Japan　67　(1)　746　2012/03

ISSN： 1342-8349

Mechanical vibration of a cylindrically rolled-up cantilever shell in microelectromechanical and nanoelectromechanical systems Peer-reviewed

W. Izumida, Y. Hirayama, H. Okamoto, H. Yamaguchi, K. -J. Friedland

PHYSICAL REVIEW B　85　(7)　075313-1-075313-10　2012/02

DOI： 10.1103/PhysRevB.85.075313 　

ISSN： 1098-0121

Observation of Landau level wave functions by Fourier transform scanning tunneling spectroscopy

Abstract of annual meeting of the Surface Science of Japan　32　121-121　2012

DOI： 10.14886/sssj2008.32.0_121 　

Motion detection of a micromechanical cantilever through magneto-piezovoltage in two-dimensional electron systems Peer-reviewed

H. Yamaguchi, H. Okamoto, S. Ishihara, Y. Hirayama

APPLIED PHYSICS LETTERS　100　(1)　012106-1-012106-3　2012/01

DOI： 10.1063/1.3674288 　

ISSN： 0003-6951

eISSN： 1077-3118

Dynamical correlation of fractionally charged excitons with a two‐dimensional electron system Peer-reviewed

S. Nomura, M. Yamaguchi, H. Tamura, T. Akazaki, Y. Hirayama

AIP Conf. Proc.　1399　615　2011/12

Measurement of the Noise Spectrum Using a Multiple-Pulse Sequence Peer-reviewed

Tatsuro Yuge, Susumu Sasaki, Yoshiro Hirayama

PHYSICAL REVIEW LETTERS　107　(17)　170504-1-170504-4　2011/10

DOI： 10.1103/PhysRevLett.107.170504 　

ISSN： 0031-9007

Resistive detection of optically pumped nuclear polarization with spin phase transition peak at Landau level filling factor 2/3 Peer-reviewed

K. Akiba, S. Kanasugi, K. Nagase, Y. Hirayama

APPLIED PHYSICS LETTERS　99　(11)　112106-1-112106-3　2011/09

DOI： 10.1063/1.3640215 　

ISSN： 0003-6951

Low-Frequency Spin Fluctuations in Skyrmions Confined by Wires: Measurements of Local Nuclear Spin Relaxation Peer-reviewed

Takashi Kobayashi, Norio Kumada, Takeshi Ota, Satoshi Sasaki, Yoshiro Hirayama

PHYSICAL REVIEW LETTERS　107　(12)　126807-1-126807-5　2011/09

DOI： 10.1103/PhysRevLett.107.126807 　

ISSN： 0031-9007

22aTM-10 Fine structures in photoluminescence spectra in the FQHE regime

Nomura,S, Yamaguchi,M, Tamura,H, Akazaki,T, Hirayama,Y

Meeting abstracts of the Physical Society of Japan　66　(2)　679　2011/08

ISSN： 1342-8349

Nonlinear magnetic field dependence of spin polarization in high-density two-dimensional electron systems Peer-reviewed

K. F. Yang, H. W. Liu, T. D. Mishima, M. B. Santos, K. Nagase, Y. Hirayama

NEW JOURNAL OF PHYSICS　13　083010-1-083010-9　2011/08

DOI： 10.1088/1367-2630/13/8/083010 　

ISSN： 1367-2630

Impact of Valley Polarization on the Resistivity in Two Dimensions Peer-reviewed

K. Takashina, Y. Niida, V. T. Renard, A. Fujiwara, T. Fujisawa, K. Muraki, Y. Hirayama

PHYSICAL REVIEW LETTERS　106　(19)　196403-1-196403-4　2011/05

DOI： 10.1103/PhysRevLett.106.196403 　

ISSN： 0031-9007

Resistively detected nuclear magnetic resonance via a single InSb two-dimensional electron gas at high temperature Peer-reviewed

K. F. Yang, H. W. Liu, K. Nagase, T. D. Mishima, M. B. Santos, Y. Hirayama

APPLIED PHYSICS LETTERS　98　(14)　142109-1-142109-3　2011/04

DOI： 10.1063/1.3579257 　

ISSN： 0003-6951

eISSN： 1077-3118

25pHD-8 Fine structures in photoluminescence spectra in the FQHE regime

Nomura,S, Yamaguchi,M, Tamura,H, Akazaki,T, Hirayama,Y

Meeting abstracts of the Physical Society of Japan　66　(1)　699　2011/03

ISSN： 1342-8349

Nonlinear Spin Polarization Dependence of Spin Susceptibility in Interacting Two-Dimensional Electron Systems Peer-reviewed

K. F. Yang, H. W. Liu, K. Nagase, K. Amakata, T. D. Mishima, M. B. Santos, Y. Hirayama

PHYSICS OF SEMICONDUCTORS: 30TH INTERNATIONAL CONFERENCE ON THE PHYSICS OF SEMICONDUCTORS　1399　2011

DOI： 10.1063/1.3666558 　

ISSN： 0094-243X

Resistively Detected Nuclear Spin Polarization in Single Narrow-Gap Quantum Wells Peer-reviewed

H. W. Liu, K. F. Yang, T. D. Mishima, M. B. Santos, Y. Hirayama

PHYSICS OF SEMICONDUCTORS: 30TH INTERNATIONAL CONFERENCE ON THE PHYSICS OF SEMICONDUCTORS　1399　2011

DOI： 10.1063/1.3666533 　

ISSN： 0094-243X

Observation of strains caused by heterostructure interfaces Peer-reviewed

Masashi Nishimori, Hirokazu Hasegawa, Susumu Sasaki, Shinji Watanabe, Yoshiro Hirayama

PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 8, NO 2　8　(2)　399-401　2011

DOI： 10.1002/pssc.201000602 　

ISSN： 1862-6351

Real-space mapping of a disordered two-dimensional electron system in the quantum Hall regime Invited Peer-reviewed

K. Hashimoto, J. Wiebe, T. Inaoka, Y. Hirayama, R. Wiesendanger, M. Morgenstern

HORIBA INTERNATIONAL CONFERENCE: THE 19TH INTERNATIONAL CONFERENCE ON THE APPLICATION OF HIGH MAGNETIC FIELDS IN SEMICONDUCTOR PHYSICS AND NANOTECHNOLOGY　334　012008-1-012008-6　2011

DOI： 10.1088/1742-6596/334/1/012008 　

ISSN： 1742-6588

High-sensitive optical measurement of spin polarization in a quantum Hall system Peer-reviewed

H. Ito, T. Yamazaki, D. Fukuoka, K. Oto, K. Muro, Y. Hirayama, N. Kumada

HORIBA INTERNATIONAL CONFERENCE: THE 19TH INTERNATIONAL CONFERENCE ON THE APPLICATION OF HIGH MAGNETIC FIELDS IN SEMICONDUCTOR PHYSICS AND NANOTECHNOLOGY　334　012021-1-012021-6　2011

DOI： 10.1088/1742-6596/334/1/012021 　

ISSN： 1742-6588

Resistively detected NMR with dispersive lineshape in single InSb quantum wells Peer-reviewed

K. F. Yang, H. W. Liu, T. D. Mishima, M. B. Santos, K. Nagase, Y. Hirayama

HORIBA INTERNATIONAL CONFERENCE: THE 19TH INTERNATIONAL CONFERENCE ON THE APPLICATION OF HIGH MAGNETIC FIELDS IN SEMICONDUCTOR PHYSICS AND NANOTECHNOLOGY　334　012029-1-012029-4　2011

DOI： 10.1088/1742-6596/334/1/012029 　

ISSN： 1742-6588

Anisotropy of Magnetoresistance Hysteresis around the nu=2/3 Quantum Hall State in Tilted Magnetic Field Peer-reviewed

Kazuki Iwata, Masayuki Morino, Akira Fukuda, Norio Kumada, Zyun Francis Ezawa, Yoshiro Hirayama, Anju Sawada

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　79　(12)　123701-1-123701-4　2010/12

DOI： 10.1143/JPSJ.79.123701 　

ISSN： 0031-9015

Dynamic nuclear polarization and nuclear magnetic resonance in the simplest pseudospin quantum Hall ferromagnet Peer-reviewed

H. W. Liu, K. F. Yang, T. D. Mishima, M. B. Santos, Y. Hirayama

PHYSICAL REVIEW B　82　(24)　241304-1-241304-4　2010/12

DOI： 10.1103/PhysRevB.82.241304 　

ISSN： 1098-0121

eISSN： 1550-235X

Skyrmion Effect on the Relaxation of SpinWaves in a Quantum Hall Ferromagnet Peer-reviewed

D. Fukuoka, K. Oto, K. Muro, Y. Hirayama, N. Kumada

PHYSICAL REVIEW LETTERS　105　(12)　126802-1-126802-4　2010/09

DOI： 10.1103/PhysRevLett.105.126802 　

ISSN： 0031-9007

Curvature dependence of vibrational modes in rolled-up semiconductor layer

W. Izumida, H. Okamoto, H. Yamaguchi, Y. Hirayama

Meeting Abstracts of the Physical Society of Japan　65　(2)　638-638　2010/08

25aWQ-7 Temperature dependence of circularly polarized photoluminescence in the FQHE regime II

Nomura,S, Yamaguchi,M, Tamura,H, Akazaki,T, Hirayama,Y

Meeting abstracts of the Physical Society of Japan　65　(2)　659　2010/08

ISSN： 1342-8349

21aHW-10 Temperature dependence of circularly polarized photoluminescence in the FQHE regime

Nomura,S, Yamaguchi,M, Tamura,H, Akazaki,T, Hirayama,Y

Meeting abstracts of the Physical Society of Japan　65　(1)　716　2010/03

ISSN： 1342-8349

Fabrication and characterization of an induced GaAs single hole transistor Peer-reviewed

O. Klochan, J. C. H. Chen, A. P. Micolich, A. R. Hamilton, K. Muraki, Y. Hirayama

APPLIED PHYSICS LETTERS　96　(9)　092103-1-092103-3　2010/03

DOI： 10.1063/1.3336011 　

ISSN： 0003-6951

Crystallographic anisotropy of the Zeeman splitting in 1D hole quantum wires Peer-reviewed

O. Klochan, A. P. Micolich, L. H. Ho, A. R. Hamilton, K. Muraki, Y. Hirayama

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES　42　(4)　967-970　2010/02

DOI： 10.1016/j.physe.2009.11.050 　

ISSN： 1386-9477

Spectroscopic study of nuclear magnetic resonance induced by oscillating electron spin domain walls Peer-reviewed

S. Watanabe, G. Igarashia, K. Hashimoto, N. Kumada, Y. Hirayama

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES　42　(4)　999-1003　2010/02

DOI： 10.1016/j.physe.2009.11.134 　

ISSN： 1386-9477

Strains in heterostructures detected by standard NMR Peer-reviewed

M. Nishimori, S. Sasaki, S. Watanabe, Y. Hirayama

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES　42　(4)　1007-1009　2010/02

DOI： 10.1016/j.physe.2009.11.066 　

ISSN： 1386-9477

Activation study of collective excitations of the soliton-lattice phase in the nu=1 double-layer quantum Hall state Peer-reviewed

D. Terasawa, S. Kozumi, A. Fukuda, M. Morino, K. Iwata, N. Kumada, Y. Hirayama, Z. F. Ezawa, A. Sawada

PHYSICAL REVIEW B　81　(7)　073303-1-073303-4　2010/02

DOI： 10.1103/PhysRevB.81.073303 　

ISSN： 1098-0121

Nuclear-Spin Resonance in Compound Semiconductor Two-Dimensional Systems Peer-reviewed

Yoshiro Hirayama

PROCEEDINGS OF 2010 CONFERENCE ON OPTOELECTRONIC AND MICROELECTRONIC MATERIALS AND DEVICES (COMMAND 2010)　111-112　2010

ISSN： 1097-2137

Nuclear spin polarization and relaxation probed by spin phase transition peak Peer-reviewed

S. Watanabe, M. H. Fauzi, N. Kumada, Y. Hirayama

PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 7, NO 10　7　(10)　2570-2573　2010

DOI： 10.1002/pssc.200983904 　

ISSN： 1862-6351

Circular polarization reversal of split photoluminescence peaks at n of slightly less than 1

S. Nomura, M. Yamaguchi, H. Tamura, T. Akazaki, Y. Hirayama

The 18th International Conference on Electronic Properties of Two-Dimensional Systems　2009/07

NUCLEAR-SPIN-BASED MEASUREMENTS OF QUANTUM HALL SYSTEMS Peer-reviewed

Yoshiro Hirayama

INTERNATIONAL JOURNAL OF MODERN PHYSICS B　23　(12-13)　2737-2738　2009/05

ISSN： 0217-9792

MICROWAVE MAGNETOPLASMON ABSORPTION BY A 2DEG STRIPE Peer-reviewed

O. M. Fedorych, S. A. Studenikin, S. Moreau, M. Potemski, T. Saku, Y. Hirayama

INTERNATIONAL JOURNAL OF MODERN PHYSICS B　23　(12-13)　2698-2702　2009/05

ISSN： 0217-9792

ELECTRON SPIN IMAGING IN QUANTUM HALL DEVICES BY KERR ROTATION MEASUREMENT Peer-reviewed

K. Oto, R. Inaba, T. Yamada, T. Yamazaki, K. Muro, Y. Hirayama, N. Kumada, H. Yamaguchi

INTERNATIONAL JOURNAL OF MODERN PHYSICS B　23　(12-13)　2750-2754　2009/05

ISSN： 0217-9792

OPTICALLY INDUCED DYNAMIC NUCLEAR SPIN POLARIZATION IN QUANTUM HALL REGIME OBSERVED BY A TIME-RESOLVED KERR ROTATION Peer-reviewed

Daisuke Fukuoka, Naoki Tanaka, Kenichi Oto, Kiyofumi Muro, Yoshiro Hirayama, Norio Kumada, Hiroshi Yamaguchi

INTERNATIONAL JOURNAL OF MODERN PHYSICS B　23　(12-13)　2755-2759　2009/05

ISSN： 0217-9792

NEGATIVE MAGNETORESISTANCE OF A SILICON 2DEG UNDER IN-PLANE MAGNETIC FIELD DUE TO SPIN-SPLITTING OF UPPER SUBBANDS Peer-reviewed

K. Takashina, Y. Niida, V. T. Renard, A. Fujiwara, T. Fujisawa, Y. Hirayama

INTERNATIONAL JOURNAL OF MODERN PHYSICS B　23　(12-13)　2938-2942　2009/05

ISSN： 0217-9792

Electrons and holes in a 40 nm thick silicon slab at cryogenic temperatures Peer-reviewed

K. Takashina, K. Nishiguchi, Y. Ono, A. Fujiwara, T. Fujisawa, Y. Hirayama, K. Muraki

APPLIED PHYSICS LETTERS　94　(14)　2009/04

DOI： 10.1063/1.3112602 　

ISSN： 0003-6951

The interplay between one-dimensional confinement and two-dimensional crystallographic anisotropy effects in ballistic hole quantum wires Peer-reviewed

O. Klochan, A. P. Micolich, L. H. Ho, A. R. Hamilton, K. Muraki, Y. Hirayama

NEW JOURNAL OF PHYSICS　11　(4)　043018-1-043018-11　2009/04

DOI： 10.1088/1367-2630/11/4/043018 　

ISSN： 1367-2630

Spin splitting of upper electron subbands in a SiO2/Si(100)/SiO2 quantum well with in-plane magnetic field Peer-reviewed

Y. Niida, K. Takashina, A. Fujiwara, T. Fujisawa, Y. Hirayama

APPLIED PHYSICS LETTERS　94　(14)　142101　2009/04

DOI： 10.1063/1.3105987 　

ISSN： 0003-6951

27pVE-12 Circularly polarized photoluminescence in the fractional quantum Hall regime

Nomura,S, Yamaguchi,M, Tamura,H, Akazaki,T, Maruyama,T, Miyashita,S, Hirayama,Y

Meeting abstracts of the Physical Society of Japan　64　(1)　688　2009/03

ISSN： 1342-8349

Magnetotransport Study in the Layer Imbalanced nu=1 Bilayer Quantum Hall State Peer-reviewed

Y. Ogasawara, A. Fukuda, K. Iwata, T. Sekikawa, T. Arai, Y. Hirayama, Z. F. Ezawa, A. Sawada

25TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT25), PART 2　150　022068-1-022068-4　2009

DOI： 10.1088/1742-6596/150/2/022068 　

ISSN： 1742-6588

Activation study of the Pseudospin soliton in the nu=1 Bilayer Quantum Hall Effect Peer-reviewed

A. Fukuda, D. Terasawa, M. Morino, K. Iwata, S. Kozumi, T. Sekikawa, Y. Ogasawara, T. Arai, N. Kumada, Y. Hirayama, Z. F. Ezawa, A. Sawada

25TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT25), PART 2　150　022012-1-022012-4　2009

DOI： 10.1088/1742-6596/150/2/022012 　

ISSN： 1742-6588

Selective polarization of nuclear spins in a wire-like quantum Hall system

Takashi Kobayashi, Norio Kumada, Takeshi Ota, Satoshi Sasaki, Yoshiro Hirayama

PHYSICS OF SEMICONDUCTORS　1199　241-+　2009

DOI： 10.1063/1.3295389 　

ISSN： 0094-243X

Time-Resolved Kerr Rotation Spectroscopy of Spin Dynamics in a Quantum Hall System

D. Fukuoka, N. Tanaka, K. Oto, K. Muro, Y. Hirayama, N. Kumada, H. Yamaguchi

PHYSICS OF SEMICONDUCTORS　1199　243-+　2009

DOI： 10.1063/1.3295390 　

ISSN： 0094-243X

Nuclear Spin Resonance Induced by Radio Frequency Electric Field

N. Kumada, T. Kamada, Y. Hirayama, S. Miyashita, T. Fujisawa

PHYSICS OF SEMICONDUCTORS　1199　461-+　2009

DOI： 10.1063/1.3295506 　

ISSN： 0094-243X

Quantum Hall Transition in Real Space: From Localized to Extended States Peer-reviewed

K. Hashimoto, C. Sohrmann, J. Wiebe, T. Inaoka, F. Meier, Y. Hirayama, R. A. Roemer, R. Wiesendanger, M. Morgenstern

PHYSICAL REVIEW LETTERS　101　(25)　256802　2008/12

DOI： 10.1103/PhysRevLett.101.256802 　

ISSN： 0031-9007

Evidence of a Transition from Nonlinear to Linear Screening of a Two-Dimensional Electron System Detected by Photoluminescence Spectroscopy Peer-reviewed

M. Yamaguchi, S. Nomura, T. Maruyama, S. Miyashita, Y. Hirayama, H. Tamura, T. Akazaki

PHYSICAL REVIEW LETTERS　101　(20)　207401　2008/11

DOI： 10.1103/PhysRevLett.101.207401 　

ISSN： 0031-9007

Electric field induced nuclear spin resonance mediated by oscillating electron spin domains in GaAs-based semiconductors Peer-reviewed

N. Kumada, T. Kamada, S. Miyashita, Y. Hirayama, T. Fujisawa

PHYSICAL REVIEW LETTERS　101　(13)　137602-1-137602-4　2008/09

DOI： 10.1103/PhysRevLett.101.137602 　

ISSN： 0031-9007

20aYK-5 Electron density dependence of photoluminescence peak splitting energies in two-dimensional electron system

Nomura,S, Yamaguchi,M, Tamura,H, Akazaki,T, Maruyama,T, Miyashita,S, Hirayama,Y

Meeting abstracts of the Physical Society of Japan　63　(2)　586　2008/08

ISSN： 1342-8349

Spin dynamics of two-dimensional electrons in a quantum Hall system probed by time-resolved Kerr rotation spectroscopy Peer-reviewed

D. Fukuoka, T. Yamazaki, N. Tanaka, K. Oto, K. Muro, Y. Hirayama, N. Kumada, H. Yamaguchi

PHYSICAL REVIEW B　78　(4)　041304-1-041304-4　2008/07

DOI： 10.1103/PhysRevB.78.041304 　

ISSN： 1098-0121

A gate-defined silicon quantum dot molecule Peer-reviewed

Hongwu Liu, Toshimasa Fujisawa, Hiroshi Inokawa, Yukinori Ono, Akira Fujiwara, Yoshiro Hirayama

APPLIED PHYSICS LETTERS　92　(22)　222104-1-222104-3　2008/06

DOI： 10.1063/1.2938693 　

ISSN： 0003-6951

Manipulation of exchange coupling energy in a few-electron double quantum dot Peer-reviewed

T. Hatano, S. Amaha, T. Kubo, Y. Tokura, Y. Nishi, Y. Hirayama, S. Tarucha

PHYSICAL REVIEW B　77　(24)　241301-1-241301-4　2008/06

DOI： 10.1103/PhysRevB.77.241301 　

ISSN： 1098-0121

Boundary-mediated electron-electron interactions in quantum point contacts Peer-reviewed

V. T. Renard, O. A. Tkachenko, V. A. Tkachenko, T. Ota, N. Kumada, J. -C. Portal, Y. Hirayama

PHYSICAL REVIEW LETTERS　100　(18)　186801-1-186801-4　2008/05

DOI： 10.1103/PhysRevLett.100.186801 　

ISSN： 0031-9007

eISSN： 1079-7114

The 0.7 anomaly in one-dimensional hole quantum wires Peer-reviewed

A. R. Hamilton, R. Danneau, O. Klochan, W. R. Clarke, A. P. Micolich, L. H. Ho, M. Y. Simmons, D. A. Ritchie, M. Pepper, K. Muraki, Y. Hirayama

JOURNAL OF PHYSICS-CONDENSED MATTER　20　(16)　164205-1-164205-8　2008/04

DOI： 10.1088/0953-8984/20/16/164205 　

ISSN： 0953-8984

Coherence time of nuclear spins in GaAs quantum well probed by submicron-scale all-electrical nuclear magnetic resonance device Peer-reviewed

Takeshi Ota, Norio Kumada, Go Yusa, Sen Miyashita, Toshimasa Fujisawa, Yoshiro Hirayama

JAPANESE JOURNAL OF APPLIED PHYSICS　47　(4)　3115-3117　2008/04

DOI： 10.1143/JJAP.47.3115 　

ISSN： 0021-4922

Highly reproducible fabrication of back-gated GaAs/AlGaAs heterostructures using AuGeNi ohmic contacts with initial Ni layer Peer-reviewed

Arnaud Valeille, Koji Muraki, Yoshiro Hirayama

APPLIED PHYSICS LETTERS　92　(15)　152106-1-152106-3　2008/04

DOI： 10.1063/1.2912034 　

ISSN： 0003-6951

eISSN： 1077-3118

Modulation of bilayer quantum Hall states by tilted-field-induced subband-Landau-level coupling Peer-reviewed

N. Kumada, K. Iwata, K. Tagashira, Y. Shimoda, K. Muraki, Y. Hirayama, A. Sawada

PHYSICAL REVIEW B　77　(15)　155324-1-155324-7　2008/04

DOI： 10.1103/PhysRevB.77.155324 　

ISSN： 1098-0121

Effects of in-plane magnetic field direction on the nuclear-spin relaxation in the nu=2/3 quantum Hall state Peer-reviewed

K. Iwata, M. Morino, A. Fukuda, M. Suzuki, Z. F. Ezawa, A. Sawada, N. Kumada, Y. Hirayama

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES　40　(5)　1175-1177　2008/03

DOI： 10.1016/j.physe.2007.08.113 　

ISSN： 1386-9477

eISSN： 1873-1759

Anisotropic magnetotransport by the pseudospin soliton in the bilayer nu=1 quantum Hall system Peer-reviewed

A. Fukuda, M. Morino, K. Iwata, D. Terasawa, S. Kozumi, N. Kumada, Y. Hirayama, Z. F. Ezawa, A. Sawada

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES　40　(5)　1255-1257　2008/03

DOI： 10.1016/j.physe.2007.08.112 　

ISSN： 1386-9477

Activation study of the bilayer nu=1/3 quantum Hall state Peer-reviewed

A. Fukuda, K. Iwata, T. Sekikawa, T. Arai, N. Kumada, Y. Hirayama, Z. F. Ezawa, A. Sawada

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES　40　(5)　1261-1263　2008/03

DOI： 10.1016/j.physe.2007.08.119 　

ISSN： 1386-9477

Interplay between electrostatic and tunnel couplings in an independently contacted double quantum dot-quantum wire coupled device Peer-reviewed

S. Sasaki, H. Tamura, S. Miyashita, T. Maruyama, T. Akazaki, Y. Hirayama, H. Takayanagi

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES　40　(5)　1292-1294　2008/03

DOI： 10.1016/j.physe.2007.08.052 　

ISSN： 1386-9477

Density dependent electron effective mass probed by photo luminescence down to dilute electron density limit Peer-reviewed

Shintaro Nomura, Masumi Yamaguchi, Tatsushi Akazaki, Hiroyuki Tamura, Tatsuhi Maruyama, Sen Miyashita, Yoshiro Hirayama

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES　40　(5)　1467-1469　2008/03

DOI： 10.1016/j.physe.2007.09.085 　

ISSN： 1386-9477

Optical mapping of properties of two-dimensional electron system in magnetic fields Peer-reviewed

Nobuaki Hayashi, Kohei Tsumura, Shintaro Nomura, Masumi Yamaguchi, Hiroyuki Tamura, Tatsushi Akazaki, Yoshiro Hirayama

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES　40　(5)　1533-1535　2008/03

DOI： 10.1016/j.physe.2007.09.132 　

ISSN： 1386-9477

Metallic behavior in low-disorder two-dimensional hole systems in the presence of long- and short-range disorder Peer-reviewed

W. R. Clarke, C. E. Yasin, A. R. Hamilton, A. P. Micolich, M. Y. Simmons, K. Muraki, Y. Hirayama, M. Pepper, D. A. Ritchie

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES　40　(5)　1599-1601　2008/03

DOI： 10.1016/j.physe.2007.09.179 　

ISSN： 1386-9477

Electron-electron interactions in clean quantum point contacts in the large conductance regime Peer-reviewed

V. T. Renard, O. A. Tkachenko, V. A. Tkachenko, T. Ota, N. Kumada, J. C. Portal, Y. Hirayama

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES　40　(5)　1684-1686　2008/03

DOI： 10.1016/j.physe.2007.10.053 　

ISSN： 1386-9477

NMR study of a canted antiferromagnet in a bilayer quantum Hall system Peer-reviewed

Norio Kumada, Koji Muraki, Yoshiro Hirayama

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES　40　(5)　937-941　2008/03

DOI： 10.1016/j.physe.2007.08.063 　

ISSN： 1386-9477

Spin-dependent phase diagram of the nu(T)=1 bilayer electron system Peer-reviewed

P. Giudici, K. Muraki, N. Kumada, Y. Hirayama, T. Fujisawa

PHYSICAL REVIEW LETTERS　100　(10)　106803-1-106803-4　2008/03

DOI： 10.1103/PhysRevLett.100.106803 　

ISSN： 0031-9007

eISSN： 1079-7114

Real-space imaging of a quantum Hall transision

Hashimoto Katsushi, Sohrmann Christoph, Inaoka Takeshi, Wiebe Jens, Hirayama Yoshiro, Roemer Rudolf, Wiesendanger Roland, Morgenstern Markus

Abstract of annual meeting of the Surface Science of Japan　28　65-65　2008

DOI： 10.14886/sssj2008.28.0.65.0 　

ISSN： 1342-8349

Nuclear spin manipulation in semiconductor nanostructures Peer-reviewed

Koji Muraki, Go Yusa, Yoshiro Hirayama

Proceedings of SPIE - The International Society for Optical Engineering　6800　H8000　2008

DOI： 10.1117/12.767747 　

ISSN： 0277-786X

eISSN： 1996-756X

Impact of long- and short-range disorder on the metallic behaviour of two-dimensional systems Peer-reviewed

W. R. Clarke, C. E. Yasin, A. R. Hamilton, A. P. Micolich, M. Y. Simmons, K. Muraki, Y. Hirayama, M. Pepper, D. A. Ritchie

NATURE PHYSICS　4　(1)　55-59　2008/01

DOI： 10.1038/nphys757 　

ISSN： 1745-2473

Initialization and logic gate operations of nuclear spin qubits using a submicron scale resistively-detected NMR device Peer-reviewed

T. Ota, G. Yusa, N. Kumada, S. Miyashita, T. Fujisawa, Y. Hirayama

PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 5, NO 1　5　(1)　306-+　2008

DOI： 10.1002/pssc.200776540 　

ISSN： 1862-6351

Pseudospin soliton in the nu=1 bilayer quantum Hall state Peer-reviewed

A. Fukuda, D. Terasawa, M. Morino, K. Iwata, S. Kozumi, N. Kumada, Y. Hirayama, Z. F. Ezawa, A. Sawada

PHYSICAL REVIEW LETTERS　100　(1)　016801-1-016801-4　2008/01

DOI： 10.1103/PhysRevLett.100.016801 　

ISSN： 0031-9007

Decoherence of nuclear spins due to dipole-dipole interactions probed by resistively detected nuclear magnetic resonance Peer-reviewed

T. Ota, G. Yusa, N. Kumada, S. Miyashita, T. Fujisawa, Y. Hirayama

APPLIED PHYSICS LETTERS　91　(19)　193101　2007/11

DOI： 10.1063/1.2804011 　

ISSN： 0003-6951

Enhancement of electron and hole effective masses in back-gated GaAs/Al(x)Ga(1-x)As quantum wells Peer-reviewed

S. Nomura, M. Yamaguchi, T. Akazaki, H. Tamura, T. Maruyama, S. Miyashita, Y. Hirayama

PHYSICAL REVIEW B　76　(20)　201306　2007/11

DOI： 10.1103/PhysRevB.76.201306 　

ISSN： 1098-0121

Dimensional oscillation in GaAs/AlAs quantum wells by two-dimensional standing surface acoustic waves Peer-reviewed

Tetsuomi Sogawa, Hideki Gotoh, Yoshiro Hirayama, Paulo V. Santos, Klaus H. Ploog

APPLIED PHYSICS LETTERS　91　(14)　141917　2007/10

DOI： 10.1063/1.2790804 　

ISSN： 0003-6951

21pTG-7 Determination of the electron and hole effective masses by photoluminescence at dilute electron density regime

Nomura,S, Yamaguchi,M, Tamura,H, Akazaki,T, Maruyama,T, Miyashita,S, Hirayama,Y

Meeting abstracts of the Physical Society of Japan　62　(2)　682　2007/08

ISSN： 1342-8349

21pTG-8 Neutral exciton and charged excitons in undoped GaAs quantum well

Yamaguchi,M, Nomura,S, Tamura,H, Akazaki,T, Maruyama,T, Miyashita,S, Hirayama,Y

Meeting abstracts of the Physical Society of Japan　62　(2)　682　2007/08

ISSN： 1342-8349

Semiconductor heterostructure studies using emerging technologies Invited Peer-reviewed

Yoshiro Hirayama, Tetsuorni Sogawa, Kyoichi Suzuki, Viyoshi Kanisawa, Hiroshi Yamaguchi

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS　244　(8)　2988-3001　2007/08

DOI： 10.1002/pssb.200675622 　

ISSN： 0370-1972

NMR evidence for spin canting in a bilayer nu=2 quantum hall system Peer-reviewed

N. Kumada, K. Muraki, Y. Hirayama

PHYSICAL REVIEW LETTERS　99　(7)　076805　2007/08

DOI： 10.1103/PhysRevLett.99.076805 　

ISSN： 0031-9007

Photoluminescence evolution across the metal-insulator transition in an undoped GaAs quantumwell Peer-reviewed

Masumi Yamaguchi, Shintaro Nomura, Tatsuhi Maruyama, Sen Miyashita, Yoshiro Hirayama, Hiroyuki Tamura, Tatsushi Akazaki

The 17th International Conference on Electronic Properties of Two-dimensional Systems　2007/07

Anomalous resistance ridges along filling factor nu=4i Peer-reviewed

K. Takashina, M. Brun, T. Ota, D. K. Maude, A. Fujiwara, Y. Ono, Y. Takahashi, Y. Hirayama

PHYSICAL REVIEW LETTERS　99　(3)　036803　2007/07

DOI： 10.1103/PhyRevLett.99.036803 　

ISSN： 0031-9007

eISSN： 1079-7114

Interaction of electron and nuclear spins in quantum wells Peer-reviewed

Koji Muraki, Norio Kumada, Yoshiro Hirayama

INTERNATIONAL JOURNAL OF MODERN PHYSICS B　21　(8-9)　1266-1275　2007/04

ISSN： 0217-9792

Imaging of subbands in InAs/GaSb double quantum wells by low-temperature scanning tunneling spectroscopy Peer-reviewed

K. Suzuki, K. Kanisawa, S. Perraud, M. Ueki, K. Takashina, Y. Hirayama

JOURNAL OF CRYSTAL GROWTH　301　97-100　2007/04

DOI： 10.1016/j.jcrysgro.2006.11.251 　

ISSN： 0022-0248

Dramatic dependence of the Fermi level pinning strength on crystal orientation at clean surfaces of n-type In0.53Ga0.47As grown by molecular beam epitaxy Peer-reviewed

Simon Perraud, Kiyoshi Kanisawa, Zhao-Zhong Wang, Yoshiro Hirayama

JOURNAL OF CRYSTAL GROWTH　301　148-151　2007/04

DOI： 10.1016/j.jcrysgro.2006.11.237 　

ISSN： 0022-0248

Imaging of interference between incident and reflected electron waves at an InAs/GaSb heterointerface by low-temperature scanning tunneling spectroscopy Peer-reviewed

Kyoichi Suzuki, Kiyoshi Kanisawa, Simon Perraud, Mineo Ueki, Kei Takashina, Yoshiro Hirayama

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS　46　(4B)　2618-2621　2007/04

DOI： 10.1143/JJAP.46.2618 　

ISSN： 0021-4922

Low-temperature characteristics of ambipolar SiO2/Si/SiO2 Hall-bar devices Peer-reviewed

Kei Takashina, Benjamin Gaillard, Yukinori Ono, Yoshiro Hirayama

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS　46　(4B)　2596-2598　2007/04

DOI： 10.1143/JJAP.46.2596 　

ISSN： 0021-4922

Observation of subband standing waves in superlattices by low-temperature scanning tunneling spectroscopy Peer-reviewed

K. Suzuki, K. Kanisawa, S. Perraud, M. Ueki, K. Takashina, Y. Hirayama

JOURNAL OF APPLIED PHYSICS　101　(8)　081705　2007/04

DOI： 10.1063/1.2722732 　

ISSN： 0021-8979

Mapping of two-dimensional electrons system in magnetic fields by local optical excitations Peer-reviewed

N. Hayashi, K. Tsumura, S. Nomura, M. Yamaguchi, H. Tamura, T. Akazaki, Y. Hirayama

First International Symposium on Atomic Technology　2007/03

Nuclear spin population and its control toward initialization using an all-electrical submicron scale nuclear magnetic resonance device Peer-reviewed

T. Ota, G. Yusa, N. Kumada, S. Miyashita, Y. Hirayama

APPLIED PHYSICS LETTERS　90　(10)　102118　2007/03

DOI： 10.1063/1.2711520 　

ISSN： 0003-6951

eISSN： 1077-3118

Controlled resonant tunneling in a coupled double-quantum-dot system Peer-reviewed

Gou Shinkai, Toshiaki Hayashi, Yoshiro Hirayama, Toshimasa Fujisawa

APPLIED PHYSICS LETTERS　90　(10)　103116　2007/03

DOI： 10.1063/1.2709905 　

ISSN： 0003-6951

Spatial imaging of two-dimensional electronic states in semiconductor quantum wells Peer-reviewed

K. Suzuki, K. Kanisawa, C. Janer, S. Perraud, K. Takashina, T. Fujisawa, Y. Hirayama

PHYSICAL REVIEW LETTERS　98　(13)　136802　2007/03

DOI： 10.1103/PhysRevLett.98.136802 　

ISSN： 0031-9007

18pTA-1 Relation between photoluminescence spectra and capacitance in undoped GaAs QW

Yamaguchi,M, Nomura,S, Maruyama,T, Akazaki,T, Tamura,H, Takayanagi,H, Miyashita,S, Hirayama,Y

Meeting abstracts of the Physical Society of Japan　62　(1)　660　2007/02

ISSN： 1342-8349

Conductance Measurement on GaAs/AlGaAs Heterostructure under Local Optical Excitations Peer-reviewed

N. Hayashi, K. Tsumura, S. Nomura, M. Yamaguchi, H. Tamura, T. Akazaki, Y. Hirayama

International Conference on Nanoelctronics, Nanostructures and Carrier Interactions 2007　2007/02

Simultaneous Measurement of Photoluminescence and Capacitance Spectra in GaAs QW Peer-reviewed

M. Yamaguchi, S. Nomura, T. Maruyama, S. Miyashita, Y. Hirayama, H. Tamura, T. Akazaki

International Conference on Nanoelctronics, Nanostructures and Carrier Interactions 2007　2007/02

Study of nuclear quadrupolar interaction using a novel all-electrical GaAs NMR device Peer-reviewed

T. Ota, N. Kumada, G. Yusa, S. Miyashita, Y. Hirayama

Physica Status Solidi (C) Current Topics in Solid State Physics　4　(5)　1759-1762　2007

DOI： 10.1002/pssc.200674281 　

ISSN： 1862-6351

Anomalous Resistance Ridges along Filling Factor  = 4i: Evidence for a New Type of Many-body Effect Peer-reviewed

K. Takashina, M. Brun, T. Ota, D. K. Maude, A. Fujiwara, Y. Ono, Y. Takahashi, Y. Hirayama

Physical Review Letters　99　036803-1-036803-4　2007

Effects of In-plane Magnetic Fields on the Canted Antiferromagnetic Phase in the Bilayer ν=2 Quantum Hall State Peer-reviewed

Akira Fukuda, Shinsuke Kozumi, Daiju Terasawa, Norio Kumada, Yoshiro Hirayama, Zyun F. Ezawa, Anju Sawada

AIP Conference Proceedings　893　639-640　2007

DOI： 10.1063/1.2730053 　

Anisotropy of Current-pumped Nuclear Spin Polarization in the ν= 2/3 Quantum Hall State Peer-reviewed

Kazuki Iwata, Masayuki Morino, Akira Fukuda, Anju Sawada, Michiro Suzuki, Zyun Francis Ezawa, Norio Kumada, Yoshiro Hirayama

AIP Conference Proceedings　893　643-644　2007

Growth of very-high-mobility AlGaSb/InAs high-electron-mobility transistor structure on si substrate for high speed electronic applications Peer-reviewed

Y. C. Lin, H. Yamaguchi, E. Y. Chang, Y. C. Hsieh, M. Ueki, Y. Hirayama, C. Y. Chang

APPLIED PHYSICS LETTERS　90　(2)　023509　2007/01

DOI： 10.1063/1.2431567 　

ISSN： 0003-6951

eISSN： 1077-3118

Dynamic suppression of nuclear-spin decoherence time in Si and GaAs using inversion pulses Peer-reviewed

S. Watnabe, J. Harada, S. Sasaki, Y. Hirayama

J. Magnetism and Magnetic Materials　310　2167　2007

DOI： 10.1016/j.jmmm.2006.11.113 　

Unpinning of the Fermi level at (111)A clean surfaces of epitaxially grown n-type In0.53Ga0.47As Peer-reviewed

Simon Perraud, Kiyoshi Kanisawa, Zhao-Zhong Wang, Yoshiro Hirayama

APPLIED PHYSICS LETTERS　89　(19)　192110　2006/11

DOI： 10.1063/1.2382731 　

ISSN： 0003-6951

eISSN： 1077-3118

Electron spin and nuclear spin manipulation in semiconductor nanosystems Invited Peer-reviewed

Yoshiro Hirayama, Go Yusa, Satoshi Sasaki

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS　243　(14)　3764-3772　2006/11

DOI： 10.1002/pssb.200642259 　

ISSN： 0370-1972

Intersubband scattering in double-gate MOSFETs Peer-reviewed

Kei Takashina, Yukinori Ono, Akira Fujiwara, Yasuo Takahashi, Yoshiro Hirayama

IEEE TRANSACTIONS ON NANOTECHNOLOGY　5　(5)　430-435　2006/09

DOI： 10.1109/TNANO.2006.880425 　

ISSN： 1536-125X

Quantum transport study of canted antiferromagnetic phase in the v=2 bilayer quantum Hall state Peer-reviewed

Akira Fukuda, Shinsuke Kozumi, Daiju Terasawa, Yuichi Shimoda, Norio Kumada, Yoshiro Hirayama, Zyun F. Ezawa, Anju Sawada

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES　34　(1-2)　77-80　2006/08

DOI： 10.1016/j.physe.2006.06.001 　

ISSN： 1386-9477

Stability of soliton lattice phase in the v=1 bilayer quantum Hall state under tilted magnetic fields Peer-reviewed

D. Terasawa, A. Fukuda, S. Kozumi, A. Sawada, Z. F. Ezawa, N. Kumada, Y. Hirayama

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES　34　(1-2)　81-84　2006/08

DOI： 10.1016/j.physe.2006.02.019 　

ISSN： 1386-9477

Anisotropic magneto transport near the v=2/3 quantum Hall state Peer-reviewed

Masayuki Morino, Kazuki Iwata, Michiro Suzuki, Akira Fukuda, Anju Sawada, Zyun F. Ezawa, Norio Kumada, Yoshiro Hirayama

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES　34　(1-2)　152-155　2006/08

DOI： 10.1016/j.physe.2006.03.123 　

ISSN： 1386-9477

Nuclear-spin-lattice relaxation in a v=1 bilayer quantum Hall system Peer-reviewed

N. Kumada, K. Muraki, Y. Hirayama

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES　34　(1-2)　164-167　2006/08

DOI： 10.1016/j.physe.2006.03.006 　

ISSN： 1386-9477

Electron-hole states in the fractional quantum Hall regime probed by photoluminescence Peer-reviewed

Shintaro Nomura, Masumi Yamaguchi, Tatsushi Akazaki, Hiroyuki Tamura, Hideaki Takayanagi, Yoshiro Hirayama

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES　34　(1-2)　292-295　2006/08

DOI： 10.1016/j.physe.2006.03.077 　

ISSN： 1386-9477

eISSN： 1873-1759

Current focusing in InSb heterostructures Peer-reviewed

A. R. Dedigama, D. Deen, S. Q. Murphy, N. Goel, J. C. Keay, M. B. Santos, K. Suzuki, S. Miyashita, Y. Hirayama

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES　34　(1-2)　647-650　2006/08

DOI： 10.1016/j.physe.2006.03.050 　

ISSN： 1386-9477

Synthesis of terahertz electromagnetic wave pulses using amplitude-and-phase masks Peer-reviewed

Ryuzi Yano, Hideki Gotoh, Yoshiro Hirayama, Toshiaki Hattori, Sen Miyashita

CHEMICAL PHYSICS　326　(2-3)　577-582　2006/08

DOI： 10.1016/j.chemphys.2006.03.021 　

ISSN： 0301-0104

eISSN： 1873-4421

Electronic transport characteristics in a one-dimensional constriction defined by a triple-gate structure Peer-reviewed

Huang-Ming Lee, Koji Muraki, Edward Yi Chang, Yoshiro Hirayama

JOURNAL OF APPLIED PHYSICS　100　(4)　043701　2006/08

DOI： 10.1063/1.2229493 　

ISSN： 0021-8979

Ballistic transport in induced one-dimensional hole systems Peer-reviewed

O. Klochan, W. R. Clarke, R. Danneau, A. P. Micolich, L. H. Ho, A. R. Hamilton, K. Muraki, Y. Hirayama

APPLIED PHYSICS LETTERS　89　(9)　092105　2006/08

DOI： 10.1063/1.2337525 　

ISSN： 0003-6951

Enhancement of electron effective mass and reduced mass in a dilute electron density regime Peer-reviewed

S. Nomura, M. Yamaguchi, T. Akazaki, K. Miyakoshi, H. Tamura, H. Takayanagi, Y. Hirayama

28th International Conference on Physics of Semiconductors　2006/07

Spin manipulation in a double quantum-dot-quantum-wire coupled system Peer-reviewed

S. Sasaki, S. Kang, K. Kitagawa, M. Yamaguchi, S. Miyashita, T. Maruyama, H. Tamura, T. Akazaki, Y. Hirayama, H. Takayanagi

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B　24　(4)　2024-2028　2006/07

DOI： 10.1116/1.2218866 　

ISSN： 1071-1023

Negative Coulomb drag in a one-dimensional wire Peer-reviewed

M. Yamamoto, M. Stopa, Y. Tokura, Y. Hirayama, S. Tarucha

SCIENCE　313　(5784)　204-207　2006/07

DOI： 10.1126/science.1126601 　

ISSN： 0036-8075

Low-frequency spin dynamics in a canted antiferromagnet Peer-reviewed

Norio Kumada, Koji Muraki, Yoshiro Hirayama

SCIENCE　313　(5785)　329-332　2006/07

DOI： 10.1126/science.1127094 　

ISSN： 0036-8075

eISSN： 1095-9203

Valley polarization in Si(100) at zero magnetic field Peer-reviewed

K. Takashina, Y. Ono, A. Fujiwara, Y. Takahashi, Y. Hirayama

PHYSICAL REVIEW LETTERS　96　(23)　236801　2006/06

DOI： 10.1103/PhysRevLett.96.236801 　

ISSN： 0031-9007

Bidirectional counting of single electrons Peer-reviewed

T Fujisawa, T Hayashi, R Tomita, Y Hirayama

SCIENCE　312　(5780)　1634-1636　2006/06

DOI： 10.1126/science.1126788 　

ISSN： 0036-8075

Optically detected cyclotron resonance in a high mobility 2D electron gas Peer-reviewed

S. Moreau, M. Byszewski, M. L. Sadowski, M. Potemski, S. A. Studenikin, G. Austing, A. S. Sachrajda, T. Saku, Y. Hirayama

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES　32　(1-2)　203-206　2006/05

DOI： 10.1016/j.physe.2005.12.133 　

ISSN： 1386-9477

Nanometre-scale nuclear-spin device for quantum information processing Invited Peer-reviewed

Y. Hirayama, A. Miranowicz, T. Ota, G. Yusa, K. Muraki, S. K. Ozdemir, N. Imoto

JOURNAL OF PHYSICS-CONDENSED MATTER　18　(21)　S885-S900　2006/05

DOI： 10.1088/0953-8984/18/21/S13 　

ISSN： 0953-8984

eISSN： 1361-648X

Optical probing of composite fermions in a two-dimensional electron gas Peer-reviewed

M Byszewski, B Chwalisz, DK Maude, ML Sadowski, M Potemski, T Saku, Y Hirayama, S Studenikin, DG Austing, AS Sachrajda, P Hawrylak

NATURE PHYSICS　2　(4)　239-243　2006/04

DOI： 10.1038/nphys273 　

ISSN： 1745-2473

eISSN： 1745-2481

Nonlocal control of the Kondo effect in a double quantum dot-quantum wire coupled system Peer-reviewed

S Sasaki, S Kang, K Kitagawa, M Yamaguchi, S Miyashita, T Maruyama, H Tamura, T Akazaki, Y Hirayama, H Takayanagi

PHYSICAL REVIEW B　73　(16)　161303(R)　2006/04

DOI： 10.1103/PhysRevB.73.161303 　

ISSN： 1098-0121

Magnetotransport study of the canted antiferromagnetic phase in bilayer nu=2 quantum Hall state Peer-reviewed

A Fukuda, A Sawada, S Kozumi, D Terasawa, Y Shimoda, ZF Ezawa, N Kumada, Y Hirayama

PHYSICAL REVIEW B　73　(16)　165304　2006/04

DOI： 10.1103/PhysRevB.73.165304 　

ISSN： 1098-0121

eISSN： 1550-235X

Magnetotransport study of the canted antiferromagnetic phase in bilayer nu=2 quantum Hall state Peer-reviewed

A Fukuda, A Sawada, S Kozumi, D Terasawa, Y Shimoda, ZF Ezawa, N Kumada, Y Hirayama

PHYSICAL REVIEW B　73　(16)　77-80　2006/04

DOI： 10.1103/PhysRevB.73.165304 　

ISSN： 1098-0121

eISSN： 1550-235X

Real-time observation of charge states and energy relaxation in a double quantum dot Peer-reviewed

Toshiaki Hayashi, Toshimasa Fujisawa, Ritsuya Tomita, Yoshiro Hirayama

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS　45　(4B)　3629-3632　2006/04

DOI： 10.1143/JJAP.45.3629 　

ISSN： 0021-4922

27aXB-11 Electron effective mass at low electron density regime in a back-gated quantum well

Nomura,S, Yamaguchi,M, Akazaki,T, Miyakoshi,K, Tamura,H, Takayanagi,H, Hirayama,Y

Meeting abstracts of the Physical Society of Japan　61　(1)　669　2006/03

ISSN： 1342-8349

Density dependent electron effective mass in a back-gated quantum well Peer-reviewed

S. Nomura, M. Yamaguchi, T. Akazaki, K. Miyakoshi, H.Tamura, H. Takayanagi, Y. Hirayama

International Symposium on Mesoscopic Superconductivity and Spintronics 2006　2006/02

Photoluminescence measurements on a GaAs quantum well in a modulated potential with a square lattice structure Peer-reviewed

M. Yamaguchi, S. Nomura, K. Miyakoshi, H.Tamura, T. Akazaki, T. Maruyama, S.Miyashita, Y. Hirayama, H. Takayanagi

International Symposium on Mesoscopic Superconductivity and Spintronics 2006　2006/02

Magnetoresistance Peak in the ν= 2 Bilayer Quantum Hall State under Tilted Magnetic Field Peer-reviewed

A. Fukuda, S. Kozumi, D. Terasawa, N. Kumada, Y. Hirayama, Z. F. Ezawa, A. Sawada

AIP Conference Proceedings　850　1337-1338　2006

DOI： 10.1063/1.2355201 　

Anisotropic Behavior of Hysterestic Transport Phoenomena in the ν= 2/3 Quantum Hall State in the Tilted Magnetic Field Peer-reviewed

K. Iwata, M. Morino, M. Suzuki, A. Fukuda, A. Sawada, Z. F. Ezawa, N. Kumada, Y. Hirayama

AIP Conference Proceedings　850　1339-1340　2006

DOI： 10.1063/1.2355202 　

Anisotropic Magnetotransport near the Bilayer ν=2/3 Quantum Hall State Peer-reviewed

M. Morino, K. Iwata, M. Suzuki, A. Fukuda, A. Sawada, Z. F. Ezawa, N. Kumada, Y. Hirayama

AIP Conference Proceedings　850　1335-1336　2006

DOI： 10.1063/1.2355200 　

Fabrication of induced two-dimensional hole systems on (311)A GaAs Peer-reviewed

WR Clarke, AP Micolich, AR Hamilton, MY Simmons, K Muraki, Y Hirayama

JOURNAL OF APPLIED PHYSICS　99　(2)　023707　2006/01

DOI： 10.1063/1.2163998 　

ISSN： 0021-8979

eISSN： 1089-7550

Micromechanical quantum electron transport Peer-reviewed

H. Yamaguchi, H. Okamoto, S. Miyashita, M. Ueki, Y. Hirayama

Seventh International Conference on New Phenomena in Mesoscopic Structures and Fifth International Conference on Surfaces and Interfaces of Mesoscopic Devices, 2005　38　152-157　2006

DOI： 10.1088/1742-6596/38/1/037 　

ISSN： 1742-6588

Giant magnetopiezoresistance at the localized-extended electronic state transition in a high-mobility 2DEG system Peer-reviewed

H Yamaguchi, S Miyashita, Y Hirayama

PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 3 NO 3　3　(3)　663-+　2006

DOI： 10.1002/pssc.200564107 　

ISSN： 1862-6351

Pauli blockade transport in the cotunneling regime through a double quantum dot Peer-reviewed

H. W. Liu, T. Fujisawa, T. Hayashi, Y. Hirayama

PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 3, NO 11　3　(11)　3766-+　2006

DOI： 10.1002/pssc.200671532 　

ISSN： 1862-6351

Pauli blockade transport in the cotunneling regime through a double quantum dot Peer-reviewed

H. W. Liu, T. Fujisawa, T. Hayashi, Y. Hirayama

PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 3, NO 11　3　(11)　3766-+　2006

DOI： 10.1002/pssc.200671532 　

ISSN： 1862-6351

Difference in self-assembling morphology of peptide nanorings Peer-reviewed

Hajime Okamoto, Tetsuo Yamada, Hiroshi Miyazaki, Tsutomu Nakanishi, Kyozaburo Takeda, Kenji Usui, Ikuo Obataya, Hisakazu Mhara, Hiroaki Azehara, Wataru Mizutani, Katsushi Hashimoto, Hiroshi Yamaguchi, Yoshiro Hirayama

Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers　44　(11)　8240-8248　2005/11/09

DOI： 10.1143/JJAP.44.8240 　

ISSN： 0021-4922

eISSN： 1347-4065

19aYC-7 Photoluminescence measurements on a semiconductor Quantum dot lattice.

Yamaguchi,M, Nomura,S, Miyakoshi,K, Ono,J, Maruyama,T, Miyashita,S, Akazaki,T, Tamura,H, Hirayama,Y, Takayanagi,H

Meeting abstracts of the Physical Society of Japan　60　(2)　520　2005/08

ISSN： 1342-8349

Self-sustaining resistance oscillations by electron-nuclear spin coupling in mesoscopic quantum hall systems Peer-reviewed

G. Yusa, K. Hashimoto, K. Muraki, T. Saku, Y. Hirayama

AIP Conference Proceedings　772　1341-1342　2005/06/30

DOI： 10.1063/1.1994608 　

ISSN： 0094-243X

eISSN： 1551-7616

Charged excitons in a back-gated undoped quantum well in the integer and the fractional quantum-Hall regimes Peer-reviewed

M. Yamaguchi, S. Nomura, T. Akazaki, H. Tamura, H. Takayanagi, Y. Hirayama

IQEC/Pacific Rim 2005　2005/05

Electron-hole complexes in a back-gated quantum well in the fractional quantum Hall regime Peer-reviewed

S. Nomura, M. Yamaguchi, T. Akazaki, H. Tamura, H. Takayanagi, Y. Hirayama

351. WE-Heraeus-Seminar, “Electron-Exciton Interactions in Semiconductor Nanostructures”　2005/05

Effects of inversion asymmetry on electron-nuclear spin coupling in semiconductor heterostructures: Possible role of spin-orbit interactions Peer-reviewed

K Hashimoto, K Muraki, N Kumada, T Saku, Y Hirayama

PHYSICAL REVIEW LETTERS　94　(14)　146601　2005/04

DOI： 10.1103/PhysRevLett.94.146601 　

ISSN： 0031-9007

Controlled multiple quantum coherence of nuclear spins in a nanometre-scale device Peer-reviewed

Go Yusa, Koji Muraki, Kel Takashina, Katsushi Hashimoto, Yoshiro Hirayama

Nature　434　(7036)　1001-1005　2005/04

DOI： 10.1038/nature03456 　

ISSN： 0028-0836

Resistance oscillations by electron-nuclear spin coupling in microscopic quantum hall devices Peer-reviewed

Go Yusa, Katsushi Hashimoto, Koji Muraki, Tadashi Saku, Yoshiro Hirayama

Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers　44　(4 B)　2669-2671　2005/04

DOI： 10.1143/JJAP.44.2669 　

ISSN： 0021-4922

25aYT-5 Charged excitons in a back-gated quantum well

Nomura,S, Yamaguchi,M, Sato,D, Miyakoshi,K, Akazaki,T, Tamura,H, Takayanagi,H, Hirayama,Y

Meeting abstracts of the Physical Society of Japan　60　(1)　642　2005/03

ISSN： 1342-8349

Ballistic transport in InSb mesoscopic structures Peer-reviewed

N Goel, J Graham, JC Keay, K Suzuki, S Miyashita, MB Santos, Y Hirayama

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES　26　(1-4)　455-459　2005/02

DOI： 10.1016/j.physe.2004.08.080 　

ISSN： 1386-9477

eISSN： 1873-1759

Anisotropic Magnetotransport around theν= 1 Bilayer Quantum Hall State Peer-reviewed

IWATA Kazuki, MORINO Masayuki, SUZUKI Michiro, FUKUDA Akira, SAWADA Anju, EZAWA Zyun F, KUMADA Norio, HIRAYAMA Yoshiro

J. Phys. Chem. Solid　66　(8-9)　1556-1559　2005

DOI： 10.1016/j.jpcs.2005.05.056 　

ISSN： 0022-3697

Pseudospin Domain of ν= 1 Double-layer Quantum Hall State near Commensurate-Incommensurate Transition Peer-reviewed

TERASAWA Daiju, KOZUMI Shinsuke, FUKUDA Akira, SAWADA Anju, EZAWA Zyun F, KUMADA Norio, HIRAYAMA Yoshiro

J. Phys. Chem. Solid　66　(8-9)　1560-1562　2005

DOI： 10.1016/j.jpcs.2005.05.057 　

ISSN： 0022-3697

Double magnetoresistance minima for ν= 1 quantum Hall state near commensurate - incommensurate transition Peer-reviewed

D. Terasawa, K. Nakada, S. Kozumi, Z. F. Ezawa, A. Fukuda, A. Sawada, N. Kumada, K. Muraki, Y. Hirayama, T. Saku

AIP Conference Proceedings　772　563-564　2005

DOI： 10.1063/1.1994232 　

In-plane field induced anisotropy of the longitudinal resistance in a bilayer quantum Hall system Peer-reviewed

M. Morino, K. Iwata, M. Suzuki, Z. F. Ezawa, A. Fukuda, A. Sawada, T. Saku, N. Kumada, K. Muraki, Y. Hirayama

772　565-566　2005

DOI： 10.1063/1.1994233 　

"Negatively charged excitons in a back-gated undoped heterostructure", in "Physics of Semiconductors" Ed. J. Menendez, and C.G.Van de Walle Peer-reviewed

S. Nomura, M. Yamaguchi, D. Sato, T. Akazaki, H. Tamura, H. Takayanagi, T. Saku, Y. Hirayama

*EMPTY*　1162　2005/01

Photoluminescence spectroscopy of a dilute electron system in a back-gated undoped quantum well Peer-reviewed

S. Nomura, M. Yamaguchi, D. Sato, T. Akazaki, H. Tamura, H. Takayanagi, Y. Hirayama

International Conference on Nanoelctronics, Nanostructures and Carrier Interactions 2005　2005/01

Optical investigation of the electrons in gated quantum wells and quantum-dot arrays Peer-reviewed

S. Nomura, M. Yamaguchi, D. Sato, T. Akazaki, H. Tamura, H. Takayanagi, T. Saku, Y. Hirayama

the 11th Advanced Heterostructure Workshop　2004/12

Charged excitons in a dilute electron gas induced by a back gate bias

S. Nomura, M. Yamaguchi, D. Sato, T. Akazaki, H. Tamura, H. Takayanagi, T. Saku, Y. Hirayama

the 2nd International Tsukuba-Symposium on Nano-Science　2004/11

14aYB-11 Charged excitons in a back-gated quantum well

Nomura,S, Yamaguchi,M, Sato,D, Akazaki,T, Tamura,H, Takayanagi,H, Saku,T, Hirayama,Y

Meeting abstracts of the Physical Society of Japan　59　(2)　613　2004/08

ISSN： 1342-8349

Landau-level hybridization and the quantum Hall effect in InAs/(AlSb)/GaSb electron-hole systems Peer-reviewed

K Suzuki, K Takashina, S Miyashita, Y Hirayama

PHYSICAL REVIEW LETTERS　93　(1)　016803　2004/07

DOI： 10.1103/PhysRevLett.93.016803 　

ISSN： 0031-9007

Negatively charged excitons in a back-gated undoped heterostructure Peer-reviewed

S. Nomura, M. Yamaguchi, D. Sato, T. Akazaki, H. Tamura, H. Takayanagi, T. Saku, Y. Hirayama

the 27 th International Conference on Physics of Semiconductors　2004/07

Self-sustaining resistance oscillations: Electron-nuclear spin coupling in mesoscopic quantum Hall devices Peer-reviewed

G. Yusa, K. Hashimoto, K. Muraki, T. Saku, Y. Hirayama

Physical Review B - Condensed Matter and Materials Physics　69　(16)　2004/04

DOI： 10.1103/PhysRevB.69.161302 　

ISSN： 0163-1829

Nuclear-spin-related resistance enhancements observed over a wide range of magnetic fields Peer-reviewed

K Hashimoto, T Saku, Y Hirayama

PHYSICAL REVIEW B　69　(15)　2004/04

DOI： 10.1103/PhysRevB.69.153306 　

ISSN： 1098-0121

Self-sustaining resistance oscillations: Electron-nuclear spin coupling in mesoscopic quantum Hall devices Peer-reviewed

G Yusa, K Hashimoto, K Muraki, T Saku, Y Hirayama

PHYSICAL REVIEW B　69　(16)　2004/04

DOI： 10.1103/PhysRevB.69.161302 　

ISSN： 1098-0121

Effect of temperature on ballistic transport in InSb quantum wells Peer-reviewed

N Goel, SJ Chung, MB Santos, K Suzuki, S Miyashita, Y Hirayama

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES　21　(2-4)　761-764　2004/03

DOI： 10.1016/j.physe.2003.11.116 　

ISSN： 1386-9477

A study of the self-assembling morphology in peptide nanorings and nanotubes Peer-reviewed

Hajime Okamoto, Tsutomu Nakanishi, Yukiko Nagai, Tetsuo Yamada, Hiroshi Miyazaki, Kyozaburo Takeda, Yukio Furukawa, Ikuo Obataya, Hisakazu Mihara, Hiroaki Azehara, Wataru Mizutani, Katsushi Hashimoto, Hiroshi Yamaguchi, Yoshiro Hirayama

Materials Research Society Symposium Proceedings　EXS　(1)　245-247　2004

ISSN： 0272-9172

Quantum Hall effect in back-gated InAs/GaSb heterostructures under a tilted magnetic field Peer-reviewed

K Suzuki, S Miyashita, K Takashina, Y Hirayama

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES　20　(3-4)　232-235　2004/01

DOI： 10.1016/j.physe.2003.08.071 　

ISSN： 1386-9477

Intralayer backscattering in narrow GaAs/Al<inf>x</inf>Ga<inf>1-x</inf>As/GaAs bilayer channels Peer-reviewed

G. Yusa, K. Muraki, T. Saku, Y. Hirayama

Physical Review B - Condensed Matter and Materials Physics　69　(8)　2004

DOI： 10.1103/PhysRevB.69.085323 　

ISSN： 1098-0121

eISSN： 1550-235X

Quantum Hall effects at Landau level crossings Peer-reviewed

Y Hirayama, K Muraki, K Hashimoto, K Takashina, T Saku

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES　20　(1-2)　133-142　2003/12

DOI： 10.1016/j.physe.2003.09.030 　

ISSN： 1386-9477

eISSN： 1873-1759

Transport properties in asymmetric InAs/AlSb/GaSb electron-hole hybridized systems Peer-reviewed

Kyoichi Suzuki, Sen Miyashita, Yoshiro Hirayama

Physical Review B - Condensed Matter and Materials Physics　67　(19)　2003/05/15

DOI： 10.1103/PhysRevB.67.195319 　

ISSN： 1550-235X 1098-0121

Electrically controlled nuclear spin polarization and relaxation by quantum-Hall states Peer-reviewed

K Hashimoto, K Muraki, T Saku, Y Hirayama

PHYSICAL REVIEW LETTERS　88　(17)　2002/04

DOI： 10.1103/PhysRevLett.88.176601 　

ISSN： 0031-9007

Back-gated point contact

Katsushi Hashimoto, Sen Miyashita, Tadashi Saku, Yoshiro Hirayama

Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers　40　(4 B)　3000-3002　2001/04

DOI： 10.1143/jjap.40.3000 　

ISSN： 0021-4922

Longitudinal resistance anomaly around the 2/3 filling factor observed in a GaAs/AlGaAs single heterostructure Peer-reviewed

K Hashimoto, K Muraki, T Saku, Y Hirayama

PHYSICA B　298　(1-4)　191-194　2001/04

ISSN： 0921-4526

Back-Gate Control in an InAs-Based Two-Dimensional System Peer-reviewed

K. Suzuki, S. Miayshita, Y. Hirayama

Physica C　352　125　2001/04

DOI： 10.1016/S0921-4534(00)01706-8 　

Slow resistance enhancements in the fractional quantum Hall regime observed in a GaAs/AlGaAs single heterostructure Peer-reviewed

K Hashimoto, T Saku, Y Hirayama

PROCEEDINGS OF THE 25TH INTERNATIONAL CONFERENCE ON THE PHYSICS OF SEMICONDUCTORS, PTS I AND II　87　937-938　2001

ISSN： 0930-8989

Quantum Point Contacts in a Density-Tunable Two-Dimensional Electron Gas Peer-reviewed

S. Nuttinck, K. Hashimoto, S. Miyashita, T. Saku, Y. Yamamoto, Y. Hirayama

Jpn. J. Appl. Phys.　39　(7A)　L655-L657　2000/07

DOI： 10.1143/jjap.39.L655 　

ISSN： 0021-4922 1347-4065

Electron and Hole Proximity Effects in the InAs/AlSb/GaSb System

Roslund Jöran H., Saito Ken, Suzuki Kyoichi, Yamaguchi Hiroshi, Hirayama Yoshiro

Jpn J Appl Phys　39　(4)　2448-2451　2000/04/30

DOI： 10.1143/JJAP.39.2448 　

ISSN： 0021-4922

Photoluminescence from a Modulation-Doped AlGaAs/GaAs Heterointerfece under Cyclotron Resonance Peer-reviewed

K. Suzuki, K. Saito, K. Muraki, Y. Hirayama

Phys. Rev. B　58　25385　1998/12

DOI： 10.1103/PhysRevB.58.15385 　

極微細構造半導体の電子輸送 Peer-reviewed

TARUCHA Seigo, SAKU Tadashi, HIRAYAM Yoshiro, TSUBAKI Kotaro

NTT R&D　40　(10)　1391-1398　1991