Details of the Researcher

PHOTO

Jun Ishihara
Section
Graduate School of Engineering
Job title
Assistant Professor
Degree

  • 博士（工学）（東北大学）

  • 修士（工学）（東北大学）

e-Rad No.
50801156

Research History 7

  • 2024/10 - Present
    Japan Science and Technology Agency

  • 2024/04 - Present
    Tohoku University　Graduate School of Engineering　Assistant Professor

  • 2023/04 - 2024/03
    Tohoku University　Graduate School of Engineering　Specially Appointed Assistant Professor

  • 2022/04 - 2023/03
    Tokyo University of Science　Junior Associate Professor

  • 2017/04 - 2022/03
    Tokyo University of Science　Assistant Professor

  • 2014/04 - 2017/03
    Sysmex Corporation

  • 2012/04 - 2014/03
    JSPS　Research Fellowships for Young Scientists

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Education 2

  • Tohoku University　Graduate School, Division of Engineering　Electronic engineering

    - 2014

  • Tohoku University　Faculty of Engineering

    - 2010

Professional Memberships 1

  • THE JAPAN SOCIETY OF APPLIED PHYSICS

Research Interests 2

  • Semiconductor

  • Spintronics

Research Areas 2

  • Natural sciences / Semiconductors, optical and atomic physics /

  • Nanotechnology/Materials / Applied materials /

Papers 25

  1. プログラマブルな空間構造光で創る非磁性半導体中の電子スピン空間構造 Invited Peer-reviewed

    石原淳

    まてりあ　64　(7)　473-477　2025/07/01

    DOI： 10.2320/materia.64.473 　

  2. Selective Synthesis of Large-Area Monolayer Tin Sulfide from Simple Substances Peer-reviewed

    Kazuki Koyama, Jun Ishihara, Nozomi Matsui, Atsuhiko Mori, Sicheng Li, Jinfeng Yang, Shiro Entani, Takeshi Odagawa, Makito Aoyama, Chaoliang Zhang, Ye Fan, Ibuki Kitakami, Sota Yamamoto, Toshihiro Omori, Yasuo Cho, Stephan Hofmann, Makoto Kohda

    Nano Letters　2025/06/25

    DOI： 10.1021/acs.nanolett.5c01639 　

  3. Effect of photoexcited carrier density on spin diffusion coefficient and helical spin lifetime Peer-reviewed

    Ryo Tokimitsu, Takachika Mori, Jun Ishihara, Makoto Kohda, Yuzo Ohno, Kensuke Miyajima

    Physical Review Research　2025/04/21

    DOI： 10.1103/PhysRevResearch.7.023072 　

  4. Direct imprinting of arbitrary spin helices using programmable structured light in a semiconductor two-dimensional electron gas Peer-reviewed

    Keito Kikuchi, Jun Ishihara, Miari Hiyama, Sota Yamamoto, Yuzo Ohno, Takachika Mori, Kensuke Miyajima, Makoto Kohda

    Physical Review Applied　2025/04/07

    DOI： 10.1103/PhysRevApplied.23.044017 　

  5. Two-color Kerr rotation spectroscopy of a suspended transition-metal dichalcogenide monolayer Peer-reviewed

    G. Mariani, Y. Kunihashi, L. Smet, T. Wakamura, S. Sasaki, J. Ishihara, M. Kohda, J. Nitta, H. Sanada

    Applied Physics Letters　2024/12/16

    DOI： 10.1063/5.0240071 　

  6. Threshold temperature of superfluorescence generation in CuCl quantum dots under resonant excitation of excitons and resonant two-photon excitation of biexcitons Peer-reviewed

    Kohei Kawamura, Tomoharu Yoshida, Jun Ishihara, Akira Ishikawa, Kensuke Miyajima

    Journal of Physics: Condensed Matter　2024/10/30

    DOI： 10.1088/1361-648X/ad636c 　

  7. Coherent transfer of the higher-order polarization state of photons to the spin structure state of electrons in a semiconductor Peer-reviewed

    Toshiki Matsumoto, Sota Sato, Shota Akei, Yuichiro Nakano, Satoshi Iba, Jun Ishihara, Katsuhiko Miyamoto, Nobuhiko Yokoshi, Takashige Omatsu, Ken Morita

    Optica Quantum　2024/08/25

    DOI： 10.1364/OPTICAQ.527615 　

  8. Polarization-dependent photoluminescence of Ce-implanted MgO and MgAl2O4 Peer-reviewed

    Manato Kawahara, Yuichiro Abe, Koki Takano, F. Joseph Heremans, Jun Ishihara, Sean E. Sullvan, Christian Vorwerk, Vrindaa Somjit, Christopher P. Anderson, Gary Wolfowicz, Makoto KOHDA, Shunuske Fukami, Giulia Galli, David D. Awschalom, Hideo Ohno, Shun Kanai

    Applied Physics Express　2024/06/19

    Publisher: IOP Publishing

    DOI： 10.35848/1882-0786/ad59f4 　

    ISSN： 1882-0778

    eISSN： 1882-0786

    More details Close

    Abstract Since the qubit’s performance of solid-state spin centers depends highly on the host material, spin centers using new host materials may offer new qubit applications. We investigate the optical properties of Ce-implanted MgO and MgAl2O4 as potential materials holding the optically accessible qubit. We find that the photoluminescence of Ce-implanted MgAl2O4 is more than 10 times brighter than that of Ce-implanted MgO and observe polarization-dependent emission of Ce center in MgAl2O4 with 2% at 4 K under 500 mT, suggesting that the properties required for initializing and reading the state of the spin qubit have been achieved.

  9. Enhanced interlayer electron transfer by surface treatments in mixed-dimensional van der Waals semiconductor heterostructures Peer-reviewed

    Takeshi Odagawa, Sota Yamamoto, Chaoliang Zhang, Kazuki Koyama, Jun Ishihara, Giacomo Mariani, Yoji Kunihashi, Haruki Sanada, Junsaku Nitta, Makoto Kohda

    APL Materials　12　(6)　2024/06/01

    Publisher: AIP Publishing

    DOI： 10.1063/5.0214718 　

    eISSN： 2166-532X

    More details Close

    We investigate the excitonic species in WS2 monolayers transferred onto III–V semiconductor substrates with different surface treatments. When the III–V substrates were covered with amorphous native oxides, negatively charged excitons dominated the spectral weight in low-temperature near-resonance photoluminescence (PL) measurements. However, when the native oxides of the III–V substrates were reduced, neutral excitons began to dominate the spectral weight, indicating a reduction in the electron density in the WS2 monolayers. The removal of the native oxides enhanced the electron transfer from the WS2 monolayer to the III–V substrate. In addition, an additional shoulder-like PL feature appeared ∼50 meV below the emission of neutral excitons, which can be attributed to the emission of localized excitons. When the III–V substrate surface was passivated by sulfur after the reduction of the native oxides, neutral excitons still dominated the spectral weight. However, the low-energy PL shoulder disappeared again, suggesting the effective delocalization of excitons through substrate surface passivation. Surface engineering of the semiconductor substrates for two-dimensional (2D) materials can provide a novel approach to control the carrier density of the 2D materials, implement deterministic carrier localization or delocalization for the 2D materials, and facilitate the interlayer transfer of charge, spin, and valley currents. These findings open the avenue for novel device concepts and phenomena in mixed-dimensional semiconductor heterostructures.

  10. Imprinting Spatial Helicity Structure of Vector Vortex Beam on Spin Texture in Semiconductors Peer-reviewed

    Jun Ishihara, Takachika Mori, Takuya Suzuki, Sota Sato, Ken Morita, Makoto Kohda, Yuzo Ohno, Kensuke Miyajima

    Physical Review Letters　130　(12)　2023/03/24

    DOI： 10.1103/PhysRevLett.130.126701 　

    ISSN： 0031-9007

    eISSN： 1079-7114

  11. Effect of anionic surfactant on dispersibility and luminescence of silicon carbide nanotubes Peer-reviewed

    Tatsuya Suzuki, Jun Ishihara, Tomitsugu Taguchi, Kensuke Miyajima

    Journal of Luminescence　245　118771-118771　2022/05

    Publisher: Elsevier {BV}

    DOI： 10.1016/j.jlumin.2022.118771 　

  12. Spatiotemporal spin dynamics of two-dimensional electron gas with ballistic motion in persistent spin helix state Peer-reviewed

    Jun Ishihara, Takuya Suzuki, Go Kitazawa, Takachika Mori, Yuzo Ohno, Kensuke Miyajima

    Physical Review B　105　(14)　2022/04/12

    Publisher: American Physical Society ({APS})

    DOI： 10.1103/PhysRevB.105.144412 　

  13. Influences of quantum fluctuation on superfluorescent spectra observed by single-shot measurement for semiconductor quantum dots Peer-reviewed

    Masaki Nasu, Kohei Kawamura, Tomoharu Yoshida, Jun Ishihara, Kensuke Miyajima

    Applied Physics Express　2020/06/01

    Publisher: {IOP} Publishing

    DOI： 10.35848/1882-0786/ab8b50 　

  14. Zero-field spin precession dynamics of high-mobility two-dimensional electron gas in persistent spin helix regime Peer-reviewed

    Jun Ishihara, Go Kitazawa, Yuya Furusho, Yuzo Ohno, Hideo Ohno, Kensuke Miyajima

    Physical Review B　101　(9)　2020/03/31

    Publisher: American Physical Society ({APS})

    DOI： 10.1103/PhysRevB.101.094438 　

  15. Fabrication of silicon carbide nanoparticles using picosecond pulsed laser ablation in acetone with characterizations from TEM and XRD Peer-reviewed

    Takumu Yamada, Fumisato Araki, Jun Ishihara, Kensuke Miyajima

    AIP Advances　9　(10)　105011-105011　2019/10

    Publisher: {AIP} Publishing

    DOI： 10.1063/1.5121756 　

  16. Carrier and spin dynamics of high-density exciton magnetic polarons in Cd<inf>0.8</inf>Mn<inf>0.2</inf>Te Peer-reviewed

    Hirase, T., Koyama, H., Nagata, M., Ishihara, J., Miyajima, K.

    Journal of Physics Condensed Matter　31　(42)　425403(1)-(9)　2019/07

    DOI： 10.1088/1361-648X/ab2dc1 　

  17. Observation of optical Stark effect between 1s - 2p exciton levels in CuCl single crystal Peer-reviewed

    S. Efumi, Y. Uchibori, J. Ishihara, K. Miyajima

    Journal of Physics: Conference Series　1220　012022(1)-(4)　2019/05

    DOI： 10.1088/1742-6596/1220/1/012022 　

  18. Generation processes of superfluorescence of biexcitons in CuCl quantum dots by one- and two-photon resonant excitation Peer-reviewed

    K. Kawamura, T. Yoshida, M. Nasu, J. Ishihara, A. Ishikawa, K. Miyajima

    Journal of Physics: Conference Series　1220　012020(1)-(4)　2019/05

    DOI： 10.1088/1742-6596/1220/1/012020 　

  19. Strain dependence of nuclear spin coherence in a (110)GaAs/AlGaAs quantum well Peer-reviewed

    Jun Ishihara, Masaaki Ono, Genki Sato, Shunichiro Matsuzaka, Yuzo Ohno, Hideo Ohno

    JAPANESE JOURNAL OF APPLIED PHYSICS　53　(9)　093001　2014/09

    DOI： 10.7567/JJAP.53.093001 　

    ISSN： 0021-4922

    eISSN： 1347-4065

  20. Direct mapping of photoexcited local spins in a modulation-doped GaAs/AlGaAs wires Peer-reviewed

    Jun Ishihara, Yuzo Ohno, Hideo Ohno

    JAPANESE JOURNAL OF APPLIED PHYSICS　53　(4)　04EM04(1)-(3)　2014/04

    DOI： 10.7567/JJAP.53.04EM04 　

    ISSN： 0021-4922

    eISSN： 1347-4065

  21. Strain and origin of inhomogeneous broadening probed by optically detected nuclear magnetic resonance in a (110) GaAs quantum well Peer-reviewed

    M. Ono, J. Ishihara, G. Sato, S. Matsuzaka, Y. Ohno, H. Ohno

    PHYSICAL REVIEW B　89　(11)　115308(1)-(4)　2014/03

    DOI： 10.1103/PhysRevB.89.115308 　

    ISSN： 1098-0121

    eISSN： 1550-235X

  22. Direct imaging of gate-controlled persistent spin helix state in a modulation-doped GaAs/AlGaAs quantum well Peer-reviewed

    Jun Ishihara, Yuzo Ohno, Hideo Ohno

    APPLIED PHYSICS EXPRESS　7　(1)　013001(1)-(4)　2014/01

    DOI： 10.7567/APEX.7.013001 　

    ISSN： 1882-0778

    eISSN： 1882-0786

  23. A strong anisotropy of spin dephasing time of quasi-one dimensional electron gas in modulation-doped GaAs/AlGaAs wires Peer-reviewed

    J. Ishihara, M. Ono, Y. Ohno, H. Ohno

    APPLIED PHYSICS LETTERS　102　(21)　212402(1)-(4)　2013/05

    DOI： 10.1063/1.4807171 　

    ISSN： 0003-6951

  24. Coherent Manipulation of Nuclear Spins in Semiconductors with an Electric Field Peer-reviewed

    Masaaki Ono, Jun Ishihara, Genki Sato, Yuzo Ohno, Hideo Ohno

    APPLIED PHYSICS EXPRESS　6　(3)　033002(1)-(3)　2013/03

    DOI： 10.7567/APEX.6.033002 　

    ISSN： 1882-0778

  25. Magnetic Field Dependence of Quadrupolar Splitting and Nuclear Spin Coherence Time in a Strained (110) GaAs Quantum Well Peer-reviewed

    Jun Ishihara, Masaaki Ono, Genki Sato, Shunichiro Matsuzaka, Yuzo Ohno, Hideo Ohno

    JAPANESE JOURNAL OF APPLIED PHYSICS　50　(4)　04DM03(1)-(3)　2011/04

    DOI： 10.1143/JJAP.50.04DM03 　

    ISSN： 0021-4922

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Presentations 6

  1. 空間光・スピン変換による半導体中のスピンテクスチャの生成と検出 Invited

    第72回応用物理学会春季学術講演会シンポジウム　2025/03/16

  2. 非磁性半導体における光励起スピンテクスチャのダイナミクス Invited

    石原 淳

    第3回超高速光エレクトロニクス研究会　2024/08/22

  3. Optically excited persistent spin helix dynamics of two-dimensional electron gas in semiconductor quantum well Invited

    Jun Ishihara

    The 5th Japan-Korea Spintronics Workshop　2024/05/30

  4. Optical generation of electron spin textures in semiconductors Invited

    Jun Ishihara

    The 27th Symposium on the Physics and Applications of Spin-related Phenomena in Semiconductors　2024/03/17

  5. Generation of spin textures in semiconductors using vector vortex beams Invited

    Jun Ishihara

    EU-Japan Workshop on Spintronics and Quantum Transformation (Spin-QX 2023)　2023/08/09

  6. 非磁性半導体におけるスピンテクスチャの光生成と制御 Invited

    石原 淳

    CRESTトポロジー領域 合同セミナー　2023/05/30

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Industrial Property Rights 1

  1. 電子スピン波の波長変換装置、演算装置、および電子スピン波の位相変調装置

    古舘海生, 菊池奎斗, 小田川武史, 菅原楓大, 関剛斎, 山本壮太, 石原淳, 好田誠

    特許7609502

    Property Type: Patent

Research Projects 14

  1. 光で創るスピンテクスチャ機能

    石原 淳

    Offer Organization: 科学技術振興機構

    System: 戦略的創造研究推進事業 さきがけ

    Institution: 東北大学

    2024/10 - 2028/03

    More details Close

    本研究では、光波の軌道角運動量や空間自由度、光干渉増幅、周波数-空間変換、プログラマブルな偏光制御など、光科学および光技術の発展によってもたらされた光機能を極限まで活用し、従来の限界を超えた光とスピンテクスチャのメディア変換技術基盤を確立します。そして連続媒質型物理リザバーといった機能性を示すことで、光の高い拡張性を利用した複雑なスピンテクスチャならではの高速・大容量処理の技術革新を目指します。

  2. スピンホールナノオッシレータのアレイ化による狭線幅RF磁場の生成と応用

    金井 駿, 土肥 昂尭, 石原 淳

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 国際共同研究加速基金(海外連携研究)

    Institution: 東北大学

    2023/09 - 2027/03

  3. Realization of novel information processing and transmission using electron spin waves

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

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

    Institution: Tohoku University

    2021/04 - 2026/03

  4. 半導体中の永久スピン旋回ダイナミクスの高感度・高速イメージング

    石原 淳

    Offer Organization: 公益財団法人旭硝子財団

    System: 研究奨励

    2023 - 2024

  5. All-optical manipulation of spins in semiconductors using orbital motion

    Ishihara Jun

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Early-Career Scientists

    Category: Grant-in-Aid for Early-Career Scientists

    Institution: Tokyo University of Science

    2021/04 - 2023/03

  6. 半導体量子井戸中のヘリカルスピン状態の光制御

    石原 淳

    Offer Organization: 公益財団法人 池谷科学技術振興財団

    System: 単年度研究助成

    2023 -

  7. Electrical control of spin qubit with tunnel barrier materials

    Kanai Shun, Ishihara Jun

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))

    Institution: Tohoku University

    2019/10 - 2022/03

  8. カルコゲナイド層状半導体における光励起スピンの時空間ダイナミクスの解明

    石原 淳

    Offer Organization: 東京理科大学

    System: 若手・女性研究者助成金

    2021 - 2022

  9. 光-スピン変換を利用した半導体中のスピン制御に関する研究

    石原 淳

    Offer Organization: 東北大学電気通信研究所

    System: 共同プロジェクト研究

    2018 - 2021

  10. スピンの空間分布の超高解像測定によるスピンダイナミクスの研究

    石原 淳

    Offer Organization: 公益財団法人島津科学技術振興財団

    System: 研究開発助成

    2021 -

  11. Super-resolution detection and spatial control of spins in semiconductor using topological lightwaves

    Ishihara Jun

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Early-Career Scientists

    Institution: Tokyo University of Science

    2018/04 - 2020/03

  12. スピン軌道有効磁場によるゼロ磁場スピン歳差運動を利用した永久スピン旋回高速伝播メカニズムの解明

    石原 淳

    Offer Organization: 公益財団法人村田学術振興財団

    System: 研究助成

    2020 -

  13. 半導体における永久スピン旋回状態の超解像検出とダイナミクスの解明

    石原 淳

    Offer Organization: 東京理科大学

    System: 研究戦略中期計画推進費

    2018 -

  14. 半導体量子構造中の電子・核スピンコヒーレントダイナミクスの制御に関する研究

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for JSPS Fellows

    Category: Grant-in-Aid for JSPS Fellows

    Institution: Tohoku University

    2012/04 - 2014/03

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Teaching Experience 6

  1. 創造工学研修　東北大学工学部

  2. 材料科学総合学実験　東北大学工学部

  3. Selected Topics in Applied Physics 2　Tokyo University of Science

  4. Advanced Physics Laboratory　Tokyo University of Science

  5. Intermediate Physics Laboratory　Tokyo University of Science

  6. Optical Physics 1　Tokyo University of Science

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Media Coverage 11

  1. 次世代半導体材料SnSの研究が前進、大面積の単層結晶成長に成功

    アイティメディア　EETimes Japan

    2025/06

    Type: Internet

  2. Tin Sulfide Advance Paves Way for Faster, More Efficient Electronics

    Hadamard LLC　Quantum Zeitgeist

    2025/06

    Type: Internet

  3. 半導体内の「電子スピン波」を自由に制御。東北大学などの研究

    Yahoo!ニュース

    2025/04

    Type: Internet

  4. 東北大ら，半導体内の電子スピン波をSLMで制御

    オプトロニクス社　OPTRONICS ONLINE

    2025/04

    Type: Internet

  5. Transfer of the quantum information of photons to the spin structure state of electrons — A step toward realizing new high-capacity information processing

    JST　Science Japan

    2024/12

    Type: Internet

  6. 表面処理で2次元、3次元半導体ヘテロ構造で電荷状態の制御に成功

    アイティメディア　MONOist

    2024/07

    Type: Internet

  7. Spintronic Transistor Tech in a Vortex Beam - Lasers inch stable patterns of spins closer to memory and computing

    IEEE　IEEE Spectrum

    2023/04

    Type: Internet

  8. 偏光空間構造を用い、スピンの空間構造を直接生成

    アイティメディア　EETimes Japan

    2023/03

    Type: Internet

  9. ベクトル光渦の偏光空間構造を半導体中のスピンに印刷 理科大などが成功

    マイナビニュース　TECH+

    2023/03

    Type: Internet

  10. 理科大ら，ベクトル光渦の空間構造をスピンに印刷

    オプトロニクス社　OPTRONICS ONLINE

    2023/03

    Type: Internet

  11. Beaming in a Spin Texture

    American Physical Society　Physics Magazine

    2023/03

    Type: Promotional material

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Academic Activities 1

  1. The 27th Symposium on the Physics and Applications of Spin-related Phenomena in Semiconductors

    2024/03/16 - 2024/03/17