Rchr
J-GLOBAL ID：201101072934792332   Update date: Oct. 03, 2024

Maruyama Isao

マルヤマ イサオ | Maruyama Isao
Affiliation and department：
Fukuoka Institute of Technology Faculty of Information Engineering Department of Information and Systems Engineering

About Fukuoka Institute of Technology Faculty of Information Engineering Department of Information and Systems Engineering


Homepage URL  (1)： http://www.fit.ac.jp/~i-maruyama
Research field  (1)： Mathematical physics and basic theory
Research keywords  (27)： 幾何学的位相 ,  量子絡み合い ,  密度行列繰りこみ群 ,  エンタングルメントエントロピー ,  量子相転移 ,  ベリー位相 ,  トポロジカル秩序 ,  量子液体 ,  グラフェン ,  対称性の破れ ,  スピン液体 ,  Z_2ベリー位相 ,  ダイマー ,  フラストレーション ,  秩序変数 ,  チャーン数 ,  時間反転 ,  エッジ状態 ,  エンタングルメント ,  エントロピー ,  強相関電子系 ,  エネルギーギャップ ,  スピ液体 ,  ベリー接続 ,  量子秩序 ,  バルクエッジ対応 ,  量子化
Research theme for competitive and other funds  (16)：
  • 2022 - 2025 Study of Magneto-Optical Phenomena in Topological Magnets due to Magneto-Electric Effects
  • 2021 - 2024 Study of low-temperature hydrogen absorption and diffusion into metal using inelastic electron spectroscopy measurements
  • 2017 - 2020 magnetic field induced topological phase transition in two dimensional frustrated spin systems
  • 2013 - 2018 Optimization of tensor network state using higher order singular value decomposition
  • 2014 - 2017 Variety and universality of bulk-edge correspondence in topological phases: From solid state physics to cold atoms
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Papers (41)：
  • Shin Miyahara, Isao Maruyama. Ferromagnetic Haldane state and dimer multiplet state of quantum ferromagnets. Physical Review B. 2024. 110. 1
  • Shin Miyahara, Isao Maruyama. Two-Dimensional Fractionally Magnetized Quantum Ferromagnet. 2024 IEEE International Magnetic Conference - Short papers (INTERMAG Short papers). 2024. 1-2
  • Isao Maruyama, Shin Miyahara. Theory of fractionally magnetized quantum ferromagnet. Physical Review B. 2023. 108. L140404
  • Masanobu Shiga, Isao Maruyama, Akihiro Mitsuda, Hirofumi Wada, Tatsuya Kawae. Electronic density of state in valence fluctuating kondo lattice systems studied by point-contact spectroscopy (Review article). Low Temperature Physics. 2023. 49. 7. 876-885
  • Takuya Takahashi, Tsubasa Teramoto, Masanobu Shiga, Isao Maruyama, Keisuke Ida, Kousei Ishiwatari, Masashi Ohashi, Tatsuya Kawae. Electronic Density of States in CeSi2-x Studied by Point-Contact Spectroscopy. Proceedings of the 29th International Conference on Low Temperature Physics (LT29). 2023
ｍore...
MISC (70)：
  • Shiga Masanobu, Okimura Kengo, Harada Takurou, Mitsuda Akihiro, Maruyama Isao, Inagaki Yuji, Wada Hirofumi, Kawae Tatuya. Observation of the hybridization gap in the heavy fermion system EuNi2P2 using point-contact spectroscopy. Meeting Abstracts of the Physical Society of Japan. 2020. 75.1. 1769-1769
  • Kamizono K., Maruyama I. Entanglement Dynamics of Spatially-Separated Free-Fermion Systems. Meeting Abstracts of the Physical Society of Japan. 2020. 75.1. 2653-2653
  • Maruyama Isao, Miyahara Shin. Ground states of S=1/2 quantum 4-leg ladder with XXZ and on-site anisotropies. Meeting Abstracts of the Physical Society of Japan. 2019. 74.1. 2650-2650
  • KATSURA HOSHO, MARUYAMA ISAO. フラットバンドの構成法-分子の奏でるハーモニー-. 固体物理. 2015. 50. 5. 257-270
  • Morishita N., G. K. Sunnardianto, Kusakabe K., Maruyama I. 18aAE-11 Local magnetic susceptibility of the zero mode on a graphene point defect and the temperature dependence. Meeting Abstracts of the Physical Society of Japan. 2015. 70. 1080-1080
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Patents (3)：
Lectures and oral presentations  (7)：
  • Phase Transitions in the Ferromagnetic Region of the spin-S Bilinear-Biquadratic Spin Chain
    (APS March Meeting 2023 2023)
  • Realizing nanographene activated by a vacancy to solve hydrogen storage problem
    (APS March Meeting 2017 2017)
  • Multipartition of Spatially Entangled Systems with Sine Square Deformation
    (APS March Meeting 2013, Volume 58, Number 1 2013)
  • ZQ topological invariants for identification of short range entangled states
    (APS March Meeting 2012 2012)
  • Z2 topological classification of the S=1/2 Heisenberg model on the two dimensional pylochlore lattice
    (APS March Meeting 2011 Volume 56, Number 1 Monday-Friday, March 21-25, 2011; Dallas, Texas 2011)
ｍore...
Education (3)：
  • 2002 - 2005 The University of Tokyo
  • 2000 - 2002 The University of Tokyo
  • 1996 - 2000 The University of Tokyo
Professional career (1)：
  • 博士(理学) (東京大学)
Work history (5)：
  • 2013/04 - 現在 Fukuoka Institute of Technology Associate Professor
  • 2008/10 - 2013/03 Osaka Univ.
  • 2007/04 - 2008/09 Tokyo Univ.
  • 2005/10 - 2007/03 Tokyo Univ.
  • 2005/04 - 2005/09 Bonn Univ.
Committee career (2)：
  • 2022/04 - 2024/03 日本物理学会 九州支部会誌編集委員
  • 2014/04 - 2015/03 日本物理学会 領域11運営委員
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