Kamihara, Yoichi

写真a

Affiliation

Faculty of Science and Technology, Department of Applied Physics and Physico-Informatics (Yagami)

Position

Professor

Related Websites

External Links

Profile Summary 【 Display / hide

  • Our primary purpose is discovery of new superconductors (e. g. MgB2, iron-based oxypnictide, cuparate). An approach to the purpose is improvements of sample synthesis procedures using solid state reaction & characterization of inorganic materials. We focus on a relation between crystallographic “local” structures (a factor of hyperfine structures) and electronic and/or magnetic structures of homogeneous crystals. This approach is the most reliable way to demonstrate new electronic materials.

Career 【 Display / hide

  • 2005.04
    -
    2008.09

    Japan Science and Technology Agency, HOSONO Transparent ElectroActive Materials, ERATO-SORST, Researcher

  • 2008.10
    -
    2010.03

    Tokyo Institute of Technology, Materials and Structures Laboratory, Tokyo Tech Postdoctoral Fellow

  • 2008.10
    -
    2010.03

    Japan Science and Technology Agency, Transformative Research-project on Iron pnictides (TRIP), Researcher (PRESTO-type)

  • 2010.04
    -
    2011.03

    慶應義塾大学, 理工学部物理情報工学科, 2年J組担任

  • 2010.04
    -
    2012.03

    Keio University, Department of Applied Physics and Physico-Informatics, Faculty of Science and Technology, Assistant Professor

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Academic Background 【 Display / hide

  • 1995.03

    東京都立町田高校, 全日制, 普通科

    Other, Graduated

  • 2000.03

    Keio University, Faculty of Science and Engineering, Department of Applied Physics and Physico-Informatics

    University, Graduated

  • 2005.03

    Keio University, Graduate School of Science and Technology, School of Fundamental Science and Technology

    Graduate School, Completed, Doctoral course

Academic Degrees 【 Display / hide

  • Ph. D. in Engineering, Keio University, Coursework, 2005.03

 

Research Areas 【 Display / hide

  • Natural Science / Magnetism, superconductivity and strongly correlated systems (Physical Properties II)

Research Keywords 【 Display / hide

  • Solid state physics

  • Inorganic materials

  • phase transition

  • magnetism

  • superconductivity

Research Themes 【 Display / hide

  • Japan Science and Technology Agency (JST), Basic Research Programs, Transformative Research-project Iron Pnictides, "Study of Electronic Phase Diagram for Iron Pnictide Superconductors", 

    2008
    -
    2011

     View Summary

    鉄系高温超電導体のうち, もっとも高いTcをゆうするSmFeAsO1-xFxの電子状態磁気状態相図を完成させた. また,SmFeAsO1-xFx (Sm-1111)を使用した超伝導線材をPowder in tube (PIT)法により作製し, Sm-1111を使用した内では世界最高の臨界電流密度(Jc)を実現した.

 

Books 【 Display / hide

  • "Superconductivity in Iron Oxypnictide Induced by F-Doping" in "Photonic and Electronic Properties of Fluoride Materials" edited by Alain Tressaud and Kenneth R. Poeppelmeier, Chapter 19, Section 1-4, pp. 423-446.

    Y. Kamihara, H. Hosono, Elsevier, 2016.03

    Scope: Chapter 19, Section 1-4, Superconductivity in Iron Oxypnictide Induced by F-Doping, pp. 423-446.

     View Summary

    フッ化物をドーパントとして利用した鉄系超伝導体の合成方法、線材作製方法、化学分析方法, 及び電子状態の測定と計算手法について概説した。 これまでに報告された鉄系超伝導体を用いた超伝導線材の作製には正確な電子磁気状態相図の理解が重要である。X線回折、メウバウワ分光、及び電子プローブマイクロアナライザ(EPMA)を使用した結果としての電子磁気状態相図、及び試料の化学組成を紹介する。

  • エネルギー材料としての混合アニオン化合物

    KAMIHARA Yoichi, 国立研究開発法人科学技術振興機構 研究開発戦略センター, 2016.03

    Scope: 俯瞰ワークショップ報告書 平成27年度エネルギー科学技術分野 最新研究開発動向 pp.34-42

     View Summary

    鉄系高温超伝導体を含む層状混合アニオン化合物の結晶学的な性質を紹介し, 化学組成の評価方法, 電子磁気状態相図を複数示した。鉄系高温超伝導体の応用には、その目的を明らかにする必要があり、また幾つかの技術的な課題のあることを説明した。

  • "鉄系超伝導材料", 鉄の事典 第19章 19.1 pp. 754-756

    KAMIHARA Yoichi, 朝倉書店, 2014.12

    Scope: 第19章 19.1 鉄系超伝導材料 pp. 754-756

     View Summary

    鉄系高温超伝導体の転移温度(Tc)は55 Kに上る。この値は液体窒素の沸点よりは低いが液体水素の沸点20.28 Kの2倍以上の値である。現在、Nb-TiやNb3Snなどの合金や金属間化合物を利用した超伝導線材が普及しているが、既存の超伝導材料は安定動作に高価な液体ヘリウムを冷媒として必要とする。しかし, 鉄系高温超伝導体はヘリウムを使用せずに安定動作する超伝導線材候補として有望である。

  • Transparent Oxides as Active Electronic Materials and Their Applications

    HIRAMATSU Hidenori,KAMIHARA Yoichi, シーエムシー出版, 2006.11

    Scope: 第3章, 3節, 層状化合物, pp. 71-93

     View Summary

    代表的な2種類の層状混合アニオン化合物(オキシカルコゲナイド、オキシプニクタイド)の電子材料としての機能をまとめた。オキシカルコゲナイドに関しては、エピタキシャル膜の作製と、p型縮退伝導の達成を紹介した。オキシプニクタイドに関しては、そのうちの1つであるLaFeOP (= LaFePO)は“磁気秩序の消失した常磁性金属”であり、超伝導を示すことを紹介し、高温超伝導体発見の可能性に言及した。この予言は2008年に自ら実証した。

  • CrスピネルおよびMnペロブスカイト関連硫化物の異常磁気物性と相間電子状態

    KAMIHARA Yoichi, 2005.03

     View Summary

    スピネル型カルコゲン化物および層状Mn酸化硫化物に対しバンドフィリング制御を行い、 Tcの制御を実現した。 スピネル型Fe0.5Cu0.5Cr2S4は350 Kではp型がn型よりも2倍の磁気抵抗を示すことが明らかになった。層状Mn酸化硫化物Sr2CuMnS O3及びSr4Cu2Mn3S2 O7.5を対象にバンドフィリング制御によるオキシ硫化物半導体の設計指針を得た。磁気ポーラロン濃度および有効質量の変化により磁気抵抗性能の向上を証明した。

Papers 【 Display / hide

  • In-gap-states of a mixed anion layered compound, polycrystalline LaCu1−δS0.5Se0.5O (δ ~ 0.01) as a degenerate semiconductor

    Nobuhiko AZUMA, Hiroki SAWADA, Hirotaka ITO, Ryosuke SAKAGAMI, Masanori MATOBA, Hidetomo USUI, and Yoichi KAMIHARA

    Materials Science and Technology of Japan 58 ( 2 ) 22 - 26 2021.04

    Research paper (scientific journal), Joint Work, Accepted

     View Summary

    Semiconducting mixed anion layered compounds (MALC) LaCu1-delta S0.5Se0.5O are synthesized via solid state reaction. We synthesized several nominal LaCu1-deltaS0.5Se0.5O (delta = 0, delta~ 0.01, and delta~ 0.02). A degenerated semiconducting bulk LaCu1-deltaS0.5Se0.5O appears at delta~ 0.01. p-type carriers are doped due to Cu deficient Cu1-deltaS0.5Se0.5 layers in LaCu1-deltaS0.5Se0.5O. In-gap states, which dominate electrical conduction, are observed at energy ~0.5 eV higher than that of the valence band in an energy band diagram for delta~ 0.01.

  • Thermoelectric transport properties of the van der Waals-type layered rhombohedral SnAs-based compound, EuSn2As2

    R. Sakagami, Y. Goto, H. Karimata, N. Azuma, M. Yamaguchi, S. Iwasaki, M. Nakanishi, I. Kitawaki, Y. Mizuguchi, M. Matoba, and Y. Kamihara

    Japanese Journal of Applied Physics 60 ( 3 ) 035511_1 - 035511_7 2021.03

    Research paper (scientific journal), Joint Work, Accepted

     View Summary

    The thermoelectric transport properties of the van der Waals-type layered rhombohedral SnAs-based compound, EuSn2As2, have been investigated. A densified polycrystalline sample of EuSn2As2 with porosity (phgr) of 2.4(9) vol.% exhibited
    a weak orientation to the c-axis for hexagonal coordination system; the weak orientation is parallel (P∥) to the pressing direction of hot pressing. Measurements of electrical resistivity (ρ), Seebeck coefficient (S),
    and thermal conductivity (κ) were conducted perpendicular (P⊥) to the pressing direction. The experimental values of ρ and S exhibit metallic temperature dependence and p-type carrier polarity. The power factor (P) was 0.51(8) mW m−1 K−2 at 673(4) K. Using the Wiedemann–Franz–Lorenz law, the phonon thermal conductivity (κph) was estimated to be 0.4(6) W m−1 K−1 at 673(6) K. The dimensionless figure of merit, ZT, was 0.092(17) at 673(3) K.

  • Thermoelectric transport properties of the van der Waals-type layered rhombohedral SnAs-based compound, EuSn<inf>2</inf>As<inf>2</inf>

    Sakagami R., Goto Y., Karimata H., Azuma N., Yamaguchi M., Iwasaki S., Nakanishi M., Kitawaki I., Mizuguchi Y., Matoba M., Kamihara Y.

    Japanese Journal of Applied Physics (Japanese Journal of Applied Physics)  60 ( 3 )  2021.03

    ISSN  00214922

     View Summary

    The thermoelectric transport properties of the van der Waals-type layered rhombohedral SnAs-based compound, EuSn2As2, have been investigated. A densified polycrystalline sample of EuSn2As2 with porosity (φ) of 2.4(9) vol.% exhibited a weak orientation to the c-axis for hexagonal coordination system; the weak orientation is parallel (P ∥) to the pressing direction of hot pressing. Measurements of electrical resistivity (ρ), Seebeck coefficient (S), and thermal conductivity (κ) were conducted perpendicular (P ⊥) to the pressing direction. The experimental values of ρ and S exhibit metallic temperature dependence and p-type carrier polarity. The power factor (P) was 0.51(8) mW m-1 K-2 at 673(4) K. Using the Wiedemann-Franz-Lorenz law, the phonon thermal conductivity (κ ph) was estimated to be 0.4(6) W m-1 K-1 at 673(6) K. The dimensionless figure of merit, ZT, was 0.092(17) at 673(3) K.

  • Investigations of arsenic substitution on the physical, electrical and magnetic properties of Bi-2212 superconductors

    W. Labban, W. Malaeb, K. Habanjar, M. S. Hassan, R. Sakagami, Y. Kamihara, and R. Awad

    Phase Transitions (Taylor and francis)  93 ( 10-11 ) 1055 - 1066 2020.10

    Joint Work, Accepted,  ISSN  01411594

     View Summary

    The effect of Arsenic substitution on the properties of Bi-2212 superconductors was studied. Solid-state reaction technique was used for the synthesis of Bi2−xAsxSr2Ca1.1Cu2.1O8 samples, x = 0, 0.1, 0.2 and
    0.4. The X-ray diffraction confirmed the formation of the tetragonal phase of Bi-2212 superconductors. The decrement in the c parameter confirmed that As insertions were introduced into the Bi sites of the
    system. The grain morphology of the surface was analysed by scanning electron microscopy, where the amount of arsenic increases with As substitution. The superconducting transition temperature (Tc) was
    determined from the DC-electrical resistivity by the standard four-probe technique. Tc was enhanced up to x = 0.1 above which it was suppressed. For magnetism, half magnetic-hysteresis loops were obtained by SQUID magnetometer at different temperatures (5 and 30 K). The hysteresis loops sizes increased with increasing Asconcentrations. The critical current density (Jc) and the flux pinning mechanisms were investigated via different models.

  • Computational chemical analysis on element-specific magnetic phases in a mixed anion layered compound superconductor, Sr2VFeAsO3-delta: II. the most stable site positions for oxygen and electronic density of states (in Japanese)

    Y. Tojo, M. Nakanishi, and Y. Kamihara

    Materials Science and Technology of Japan (Materials Science Society of Japan)  56 ( 6 ) 231 - 235 2019.12

    Research paper (scientific journal), Accepted,  ISSN  13474774

     View Summary

    Sr2VFeAsO3−δ(21113V) is a mixed anion layered compound containing a perovskite-related vanadium (V) oxide blocking layer in a unit cell. In the previous study, the magnetic stability of V and Fe in 21113V (delta = 0, 0.25, 0.50) was theoretically verified on the density functional theory (DFT). In this study, we demonstrated the most stable site positions in the crystal structure including deficient oxygen. In delta = 0.25, 0.50, the z position of oxygen is reproduced reported results, preciously. It is indicated that oxygen deficiency is inevitable in the reported 21113V with nominally delta = 0 samples. The oxygen deficiency of the apical sites for the perovskite-related structure expands the lattice constant c. We also demonstrated the density of states (DOS) of 21113V. Fe in 21113V contributes to electrical conduction and V does not contribute to electrical conduction. Except for delta = 0, V in 21113V exhibits the ferrimagnetic phase (Ferri.) with spontaneous magnetic polarization.

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Papers, etc., Registered in KOARA 【 Display / hide

Reviews, Commentaries, etc. 【 Display / hide

  • 特集 シン・遷移金属超伝導体 企画の意図

    神原陽一

    日本磁気学会 会報 まぐね 18 ( 3 ) 111 - 111 2023.06

    Article, review, commentary, editorial, etc. (scientific journal), Lead author

  • 書評「楽しい金属化合物の単結晶育成と物性」

    神原陽一

    Magnetics Japan 17 ( 3 ) 165 - 165 2022.06

    Book review, literature introduction, etc., Single Work, Lead author

  • 新著紹介, 佐藤憲昭, 三宅和正, 磁性と超伝導の物理: 重い電子系の理解のために

    神原陽一

    日本物理学会誌 74 ( 11 ) 798 - 799 2019.11

    Book review, literature introduction, etc., Single Work

  • Electronic properties of 1111 superconducting materials and superconducting wires made from 1111 via powder-in-tube process

    KAMIHARA Yoichi

    J. Cryo. Super. Soc. Jpn. 52 ( 6 ) 415 - 421 2017.11

    Article, review, commentary, editorial, etc. (scientific journal), Single Work

     View Summary

    In a history of superconductors 1911-2017, Fe-based superconductor ReFePnO1-xFx (Re: rare earth, Pn: Pnictogen) exhibits relative high superconducting transition temperatures (Tc)  58 K under ambient pressure. Electron doping by substitution of O2- with F- was required for appearance of a superconducting phase with high Tc. The Tc and upper critical field of ReFePnO1-xFx are very attractive for applications as superconducting wires and tapes under high magnetic fields, although demonstration of practical superconducting wires is a tough challenge due to the difficulty in controlling the F contents during a processing for ex-situ powder in tube method. In 2017, Zhang et al reported that iron-based superconducting tapes with Cu sheath showed superconducting electrical current (Jc) ~ 18 kAcm2. It is noteworthy that the tapes are sintered at 300 deg. C.

  • A private story, discovery of iron-based high Tc superconductors II

    KAMIHARA Yoichi

    J. Cryo. Super. Soc. Jpn. 52 ( 6 ) 383 - 388 2017.11

    Article, review, commentary, editorial, etc. (scientific journal)

     View Summary

    After obtaining my doctorate in engineering from Keio University, I spent five years as a researcher at the Tokyo Institute of Technology, Suzukakedai Campus in Yokohama. During that time, I made the first report on a material system called iron-based high-temperature superconductors (Fe-SCs). Research on Fe-SCs is still hot topic in condensed matter physics. Now, I am continuing my research mainly on the fabrication of superconducting wire using Fe-SCs, while being distracted by some traditional affairs as a member of the faculty. Research on Fe-SCs has encouraged young researchers towards the further discovery of novel layered superconductors. This article was prepared by updating the content of “A Private Story, Discovery of Iron-based High Tc Superconductors” previously published in the membership journal of the Physical Society of Japan.

Presentations 【 Display / hide

  • メスバウワ分光と密度汎関数理論による複合アニオン層状化合物 GdFeAsO の磁性

    神原陽一,志村岳栄,野村悠祐,的場 正憲

    第71回応用物理学会春季学術講演会, 

    2024.03

    Oral presentation (general)

     View Summary

    我々は、鉄系高温超伝導体の母物質の一つであるGdFeAsOに着目する。GdFeAsOの磁気構造は、メスバウワ分光、Density functional theory (DFT)による第一原理計算により明らかになる。GdFeAsOは、酸素サイトへのフッ素置換により反強磁性相が消失し、超伝導相が生じる。超伝導相のTcは、フッ素濃度に依存するが、このフッ素濃度の決定方法の決着には未だ至っていない。

  • Experimental and theoretical magnetism on antiferromagnetic GdFeAsO, a mother compound of high-Tc iron-based superconductors

    Yoichi Kamihara

    Second Workshop on Fundamentals in density functional theory (DFT2024) (Auditorium, Integrated Innovation Building (IIB), RIKEN Kobe Campus) , 

    2024.02

    Oral presentation (general)

     View Summary

    We focus on a mixed anion layered compound GdFeAsO (Gd1111) as a mother compound for high-Tc iron-based superconductor. Mössbuer spectroscopy and density functional theory (DFT) reveiled antiferromagnetic (AF) phase of GdFeAsO. In Gd1111 compounds, F-doping supresses the AF phase of Fe. A superconducting phase of Gd1111 appears in F-doped Gd1111 exhibiting nonmagnetic Fe at low temperatures. Superconducting transition temperature (Tc) depends on F-content in GdFeAsO1-xFx, although intrinsic F contents still controvertial for F-doped GdFeAsO. We demonstrate an electronic and magnetic phase diagram for GdFeAsO1-xFx.

  • A private story, discovery of iron-based high Tc superconductors III

    Y. Kamihara

    Grand Meeting MRM&ICA2023 (Kyoto) , 

    2023.12

    Oral presentation (invited, special)

     View Summary

    日本物理学会誌 Vol. 66, No. 10, pp.753-754 (2011).「鉄系高温超伝導体発見秘話」(英題: Private Story, Discovery of Iron-Based High Tc Superconductors)と低温工学, Vol.52, No. 6, pp. 383-388 (2017). 鉄系高温超電導体発見のこぼれ話とその後の新材料 (英語: Private Story, Discovery of Iron-Based High Tc Superconductors II)のその後の進捗を紹介する。

  • Analysis of critical current density of H-doped SmFeAsO

    T. Suemura, R. Hotchi, S. Oka, M. Matoba, and Y. Kamihara

    Grand Meeting MRM&ICA2023 (Kyoto) , 

    2023.12

    Poster presentation

     View Summary

    Abstract: (研究室限定) https://keio.app.box.com/file/1405200963647
    要約: 鉄系高温超伝導体の母相SmFeAsOの酸素サイトを水素で部分置換されたH-doped SmFeAsOは、F-doped SmFeAsOと同程度のTcを示す。我々は拡張Beanモデルを用いて多結晶 H-doped SmFeAsOの低温での磁気臨界電流密度(Jc)を求めた。

  • The improvement of burning synthesis of Bi2Sr2CaCu2O8+x by Sol-gel method and evaluation of its function as oxygen reaction catalysis

    M. Takeuchi, H. Miyamoto, T. Matsumura, M. Matoba, and Y. Kamihara

    Grand Meeting MRM&ICA2023 (Kyoto) , 

    2023.12

    Poster presentation

     View Summary

    Abstract: (研究室内限定) https://keio.app.box.com/file/1405247876595
    要約: Bi2Sr2CaCu2O8+x (Bi-2212)は代表的な高温超伝導体の一つである。我々はこの試料を複数の条件でSol-Gel法により作製し、その酸素発生反応に関する電気化学触媒能の指標となる過電圧を報告する。試料合成に関する条件を変化させて多結晶試料中の異相量を減らした。

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Research Projects of Competitive Funds, etc. 【 Display / hide

  • 反強磁性-強磁性境界トポロジカル磁性擬二次元導体における相転移制御のための研究

    2022.04
    -
    2023.03

    慶應義塾大学, 学事振興資金, Research grant, Principal investigator

  • 水素ドープを施された鉄系高温超伝導体SmFeAsOのスピン電子状態の研究

    2022.04
    -
    2023.03

    京都大学複合原子力科学研究所, 令和4年度共同利用研究, Joint research, Principal investigator

  • 反強磁性-強磁性境界トポロジカル磁性擬二次元導体における相転移制御のための研究

    2022.04
    -
    2023.03

    慶應義塾大学, 学事振興資金, Research grant, Principal investigator

  • 新規近藤格子系の磁気秩序に関する研究

    2021.04
    -
    2022.03

    京都大学複合原子力化学研究所共同利用支援システム, 2021年度共同利用, Joint research, No Setting

  • 新規近藤格子系の磁気秩序に関する研究

    2020.04
    -
    2021.03

    京都大学複合原子力化学研究所共同利用支援システム, 2019年度共同利用, Joint research, No Setting

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Works 【 Display / hide

Intellectual Property Rights, etc. 【 Display / hide

  • 混合アニオン化合物鉄系超電導線材とその製造方法

    Date applied: 2016-191311  2016.09 

    Date announced: 2018-055975  2018.04 

    Patent, Joint

  • 層状ビスマスカルコゲナイド系熱電材料及びその製造方法

    Date applied: 2015-168193 (P2015-168193)  2015.08 

    Date announced: 2016-58725 (P2016-58725A)  2016.04 

    Date issued: 特許第6619180号(P6619180)  2019.11

    Patent, Joint

  • 層状化合物及び超伝導体並びにそれらの製造方法

    Date applied: 2010-520839  2009.07 

    Date announced: WO2010/007929  2010.01 

    Date issued: 5440879 

    Patent, Joint

  • 層状化合物及び超伝導体ならびにそれらの製造方法

    Date applied: 2008-082386  2008.03 

    Date announced: 2009-234847  2009.10 

    Date issued: 5518295 

    Patent, Joint

  • 高温超伝導化合物

    Date applied: 2008-035977  2008.02 

    Date announced: WO2009JP52714   

    Patent, Joint

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Awards 【 Display / hide

  • Best presentation award

    Yutaro Yamada, Ryosuke Sakagami, Masanori Matoba, Yoichi Kamihara, 2022.11, MRS-Korea, Thin film preparation and Raman spectroscopy of EuSn2As2

    Type of Award: Award from international society, conference, symposium, etc.

  • 学会活動貢献賞

    2019.09, 日本磁気学会, 「企画委員会活動を通した学会活動の活性化への貢献」

    Type of Award: Award from Japanese society, conference, symposium, etc.

  • Best Presentation Awards (Poster)

    M. Nakanishi, M. Matoba, and Y. Kamihara, 2018.11, The Materials Research Society of Korea, Electrical structure and thermal properties of ZrCuSiAs type mixed anion layered compounds

    Type of Award: International academic award (Japan or overseas)

  • Best Poster Awards

    Tatsuki KATO, Kunihiro KIHOU, Chul-Ho LEE, Yoichi KAMIHARA, 2017.08, The Materials Science Society of Japan, Transport properties of high sintered density layered oxychalcogenide, LaCuSeO

    Type of Award: International academic award (Japan or overseas)

     View Description

    ポスター発表者の内, 約15-20%の方が受賞

  • 18th Award for Academic Papers on Physics (The Physical Society of Japan)

    Yusuke NAKAI; Kenji ISHIDA; Yoichi KAMIHARA, Masahiro, HIRANO, Hideo HOSONO, 2013.03, Evolution from Itinerant Antiferromagnet to Unconventional Superconductor with Fluorine Doping in LaFeAs(O1-xFx) Revealed by 75As and 139La Nuclear Magnetic Resonance

    Type of Award: Award from Japanese society, conference, symposium, etc.

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Courses Taught 【 Display / hide

  • THERMAL PHYSICS

    2023

  • SOLID STATE SCIENCE

    2023

  • PRESENTATION TECHNIQUE

    2023

  • INDEPENDENT STUDY ON FUNDAMENTAL SCIENCE AND TECHNOLOGY

    2023

  • GRADUATE RESEARCH ON FUNDAMENTAL SCIENCE AND TECHNOLOGY 2

    2023

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Courses Previously Taught 【 Display / hide

  • 物理情報工学セミナー

    慶應義塾大学理工学部物理情報工学科

    2018.04
    -
    2019.03

  • 物理情報工学特別講義

    慶應義塾大学理工学部物理情報工学科

    2018.04
    -
    2019.03

  • 物理情報工学演習

    Keio University

    2014.04
    -
    2015.03

    Autumn Semester, Seminar, Lecturer outside of Keio, 1h, 130people

  • 物理情報工学実験CD

    Keio University

    2014.04
    -
    2015.03

    Autumn Semester, Laboratory work/practical work/exercise, Within own faculty, 3h, 70people

  • 熱物理

    Keio University

    2014.04
    -
    2015.03

    Autumn Semester, Lecture, Within own faculty, 3h, 70people

    ジュールの原理, エルビンの原理, ランフォードの実験(熱素論の否定), エントロピー

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Educational Activities and Special Notes 【 Display / hide

  • 鈴木隆起君の博士学位請求論文"金属薄膜系におけるスピン流・軌道流の生成現象と電流誘起トルクに関する研究"の副査

    2023.12
    -
    2024.01

    , Special Affairs

  • 張宇傑君の博士学位請求論文"Theoretical Study on Transport and Kondo effect in Quantum Dot Interferometer"の副査

    2023.07
    -
    2023.08

    , Special Affairs

  • 河村泰良君の博士学位請求論文"駆動散逸冷却Fermi原子気体における非平衡BCS-BECクロスオーバー"の副査

    2022.11
    -
    2022.12

    , Special Affairs

  • 坂上良介君の博士学位請求論文"Synthesis and transport properties of van der Waals-type quasi-two-dimensional pnictide, EuSn2As2"の主査

    2021.07
    -
    2021.08

    , Special Affairs

  • 鏡原大地君の博士学位請求論文"極低温Fermi原子気体におけるずり粘性率の理論研究"の副査

    2019.12
    -
    2020.09

    , Special Affairs

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Memberships in Academic Societies 【 Display / hide

  • Materials Science Society of Japan, 

    2014.04
    -
    Present
  • Cryogenics and Superconductivity Society of Japan, 

    2013.04
    -
    Present
  • American Physical Society, 

    2010.12
    -
    Present
  • The Physical Society of Japan, 

    2005.03
    -
    Present
  • The Japan Society of Applied Physics, 

    2005.03
    -
    Present

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Committee Experiences 【 Display / hide

  • 2022.01
    -
    2023.07

    公益社団法人日本磁気学会顧問, 公益社団法人日本磁気学会

     View Remarks

    職務: 理事会への意見の答申、顧問会への出席
    期間中の会議開催回数  2回程度
    開催時間数(1回)   約2時間

  • 2021.05
    -
    Present

    理事 (庶務), 一般社団法人 日本材料科学会

  • 2020.04
    -
    2026.03

    日本磁気学会 編集論文委員会, 日本磁気学会

  • 2019.09
    -
    Present

    若手育成企画委員会 委員, 一般社団法人 日本材料科学会

  • 2019.09
    -
    2021.08

    公益社団法人日本磁気学会顧問, 公益社団法人日本磁気学会

     View Remarks

    職務: 理事会への意見の答申、顧問会への出席
    期間中の会議開催回数  2回程度
    開催時間数(1回)   約2時間

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