SHIMAZU Yoshihiro

Organization

Faculty of Engineering, Division of Intelligent Systems Engineering

Title

Associate Professor

Research Fields, Keywords

Experimental low temperature physics

Mail Address

E-mail address



The Best Research Acheivement as Researcher Life 【 display / non-display

  • 【Published Thesis】 Environmental Effects on Hysteresis of Transfer Characteristics in Molybdenum Disulfide Field-Effect Transistors  2016

    【Published Thesis】 Observation of higher-order sideband transitions and first-order sideband Rabi oscillations in a superconducting flux qubit coupled to a SQUID plasma mode  2013

The Best Research Achievement in the last 5 years 【 display / non-display

  • 【Published Thesis】 Synthesis and characterization of zirconium disulfide single crystals and thin-film transistors based on multilayer zirconium disulfide flakes  2018

    【Published Thesis】 Contact-induced doping in aluminum-contacted molybdenum disulfide  2018.01

    【Published Thesis】 Field-effect transistors using thin flakes of misfit layer compound (LaS)1.20CrS2  2017

    【Published Thesis】 Environmental effects on hysteresis of transfer characteristics in molybdenum disulfide field-effect transistors  2016

    【Published Thesis】 Observation and calculation of higher-order sideband transitions in a flux qubit coupled to a SQUID-based resonator  2014

Graduating School 【 display / non-display

  •  
    -
    1986

    The University of Tokyo   Faculty of Science   Department of Physics   Graduated

Graduate School 【 display / non-display

  •  
    -
    1991

    The University of Tokyo  Graduate School, Division of Science  Department of Physics  Doctor Course  Accomplished credits for doctoral program

Degree 【 display / non-display

  • Doctor of Science -  The University of Tokyo

External Career 【 display / non-display

  • 1991.06
    -
    1996.10

    University of Tokyo   Research Assistant  

Academic Society Affiliations 【 display / non-display

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    Physical Society of Japan

Field of expertise (Grants-in-aid for Scientific Research classification) 【 display / non-display

  • Condensed matter physics I

  • Condensed matter physics II

 

Research Career 【 display / non-display

  • Experimental low temperature physics

    Project Year:  -   

Books 【 display / non-display

  • Double-loop Josephson-Junction Flux Qubit with Controllable Energy Gap

    Y. Shimazu, K. Ochiai, E. Shinozaki (Part: Joint Work )

    Foundations of Quantum Mechanics in the Light of New Technology  2009 ISBN: 9789814282123

  • Asymmetric flux bias for coupled qubits to observe entangled states

    (Part: Single Work )

    Realizing controllable quantum states  2005

  • Collective measurement of many equivalent three-junction loops

    J.E. Mooij (Part: Joint Work )

    Towards the controllable quantum states  2003

Thesis for a degree 【 display / non-display

  • Experimental Study of Fluctuations of Soft X-ray and Magnetic Field in the REPUTE-1 Reversed Field Pinch Plasma

    島津 佳弘 

      1993.02

    Doctoral Thesis   Single Work

     View Summary

    東京大学 理学系研究科 逆転磁場ピンチプラズマの実験装置で、軟X線と磁場の揺動を測定し、解析を行った。軟X線は、2か所のポロイダル断面に測定器の2次元アレイを設置し、トモグラフィー計測を実施し、断面間での揺動の相関を解析することにより、トロイダルモードナンバーとポロイダルモードナンバーの両方を評価した。磁場の揺動は、磁気プローブにより測定した。これらの実験結果について考察し、逆転磁場ピンチプラズマにおける揺動の構造について議論した。

    DOI

  • Effective Interactions in Nuclei

    島津 佳弘 

      1988.02

    Master Thesis   Single Work

     View Summary

    東京大学 理学系研究科 原子核内の有効相互作用として、pairing相互作用とquadrupole pairing相互作用に注目し、これらがはたらくときの原子核のエネルギーレベルと遷移確率について計算を行った。その結果をSn等の原子核のエネルギーレベルの実験結果と比較し考察を行った。

Papers 【 display / non-display

  • Environmental Effects on Hysteresis of Transfer Characteristics in Molybdenum Disulfide Field-Effect Transistors

    Y. Shimazu, M. Tashiro, S. Sonobe, M. Takahashi

    Scientific Reports   6   30084   2016.07  [Refereed]

    Joint Work

     View Summary

    数ナノメートルの2硫化モリブデンの結晶をチャンネルとする電界効果トランジスタ素子を作製し、伝導特性を調べた。Ti/Au 電極を用いることでオーミック特性が得られた。伝達特性に対する雰囲気ガスの影響を、酸素、窒素、水蒸気について調べ、伝達特性のヒステリシスに対して水分子が最も大きな影響をもつこと、水分子がホールトラップとして機能していることを解明した。また、200K前後の低温にすることで、ヒステリシスが消失することを明らかにした。

    Web of Science DOI PubMed

  • Observation and calculation of higher-order sideband transitions in a flux qubit coupled to a SQUID-based resonator

    Y. Shimazu, R. Shirasaki, S. Toda, H. Yamanashi

    J. Phys.: Conf. Ser.   568   052030   2014.12  [Refereed]

    Joint Work

     View Summary

    磁束量子ビットと、それの読み出し用のDC-SQUIDに付随する共振器モードが結合することによって生じる高次サイドバンドについて、測定結果と、理論計算の結果を示した。次数が3までのサイドバンド遷移を初めて観測した実験結果であり、遷移行列要素の計算結果によってこれを説明することができた。

    DOI

  • Work function modulation of electrodes contacted to molybdenum disulfide using an attached metal pad

    Yoshihiro Shimazua), Tatsuya Iwabuchi, Kensuke Arai

    Applied Physics Letters ( AIP Publishing LLC )  Vol.9 ( 8 )   2019.08  [Refereed]

    Joint Work

    DOI

  • Contact-induced doping in aluminum-contacted molybdenum disulfide

    Yoshihiro Shimazu, Kensuke Arai and Tatsuya Iwabuchi

    Jpn. J. Appl. Phys.   57   015801   2018.01  [Refereed]

    Joint Work

    DOI

  • Metal-insulator transition in a transition metal dichalcogenide: Dependence on metal contacts

    Y Shimazu, K Arai and T Iwabuchi

    Journal of Physics: Conf. Series   969   012105   2018  [Refereed]

    Joint Work

    DOI

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Grant-in-Aid for Scientific Research 【 display / non-display

  • 2

    Grant-in-Aid for Scientific Research(C)

    Project Year: 2015.04  -  2018.03 

  • Grant-in-Aid for Scientific Research(C)

    Project Year: 2012.04  -  2014.03 

  • Grant-in-Aid for Exploratory Research

    Project Year: 2012.04  -  2014.03 

Presentations 【 display / non-display

  • Influence of metal contacts on metal-insulator transition in molybdenum disulfide field effect transistors

    T. Iwabuchi, K. Arai and Y. Shimazu

    International Symposium on Nanoscale Transport and phoTonics (ISNTT2017)  (NTT Atsugi R&D Center)  2017.11.15  

  • Metal-insulator transition in a transition metal dichalcogenide: dependence on metal contacts

    Y. Shimazu, K. Arai, T. Iwabuchi

    28th International Conference on Low Temperature Physics  (Gothenburg, Sweden)  2017.08.15  

  • Electric field effect and thermally activated transport in misfit layer compound (LaS)1.20CrS2

    Y. Shimazu, M. Takanashi, D. Kurihara, Y. Fujisawa, K. Arai, T. Iwabuchi, and K. Suzuki

    28th International Conference on Low Temperature Physics  (Gothenburg, Sweden)  2017.08.15  

  • Hysteresis of Transfer Characteristics in Field-Effect Transistors with a Molybdenum Disulfide Channel

    Y. Shimazu  [Invited]

    Nano-Micro Conference 2017  (Shanghai, China)  2017.06.20  

  • Raman-like transitions in a superconducting quantum circuit and incorporation of a switch made of novel 2D materials

    Y. Shimazu, R. Shirasaki  [Invited]

    Energy Materials Nanotechnology Meeting on Quantum  (Phuket, Thailand)  2016.04.10  

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Past of Collaboration and Commissioned Research 【 display / non-display

  • superconducting qubit

    Cooperative Research within Japan  

    Project Year: 2002  -  2007