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Study on transistor properties of topological insulator under pressure

Research Project

Project/Area Number 18K18736
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 13:Condensed matter physics and related fields
Research InstitutionOkayama University

Principal Investigator

Kubozono Yoshihiro  岡山大学, 異分野基礎科学研究所, 教授 (80221935)

Project Period (FY) 2018-06-29 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Fiscal Year 2019: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2018: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywords電界効果キャリアドープ / 電界効果トランジスタ / 超伝導 / 圧力 / 圧力誘起超伝導 / 高圧 / トランジスタ特性 / 電気抵抗 / 超伝導特性 / 高圧トラジスタ特性 / トポロジカル絶縁体 / 超高圧 / キャリアドーピング / キャリア濃度
Outline of Final Research Achievements

The research goal is to develop new superconducting materials via carrier doping of various topological insulators and to control the superconducting properties by applying pressure for their superconducting materials. Throughout this study, we have investigated the electric transport properties of Ag doped Bi2Se3 which was electrostatically carrier-doped by a fabrication of field-effect transistor (FET) device. Moreover, we have fully investigated the electric transport properties of Bi2-xSbxTe3-ySey in a wide pressure range, and discovered superconductivity under pressure. It should be noticed that the energy of Fermi level and Dirac point of Bi2-xSbxTe3-ySey could be tuned depending on x and y. The electric-double-layer (EDL) FET with thin crystals of Bi2-xSbxTe3-ySey have been fabricated and their transistor properties have been being investigated under pressure.

Academic Significance and Societal Importance of the Research Achievements

本研究の最終目標は、電界効果によってキャリアドープされたトポロジカル絶縁体で新規な超伝導体を作製して、更にそれに圧力を印加して超伝導特性を制御することである。そもそも、「電界効果キャリアドーピングされたトポロジカル物質に圧力を印加して超伝導を制御する」という研究は全く未開拓であって、まずは、どのように電界効果トランジスタを高圧で動作させるのかといった点を解決せねばならない。このように、本研究課題は前人未到の研究ともいえるものである。これが実現できれば、自在なキャリア制御と圧力による物性制御を組み合わせることが可能となり、物性物理学の飛躍的な進展をもたらすことになる。

Report

(3 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • Research Products

    (27 results)

All 2020 2019 2018 Other

All Int'l Joint Research (5 results) Journal Article (10 results) (of which Int'l Joint Research: 8 results,  Peer Reviewed: 10 results,  Open Access: 5 results) Presentation (7 results) (of which Int'l Joint Research: 5 results,  Invited: 2 results) Book (3 results) Remarks (2 results)

  • [Int'l Joint Research] ナポリ大学/アンコーナ大 (UPDM)(イタリア)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] ビュルツブルグ大学(ドイツ)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] 台湾 放射光研究センター(その他の国・地域)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] フェデリコII世・ナポリ大学(イタリア)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] NSRRC(その他の国・地域)

    • Related Report
      2018 Research-status Report
  • [Journal Article] Superconducting behavior of a new metal iridate compound, SrIr2, under pressure2020

    • Author(s)
      Xiaofan Yang, Huan Li, Tong He, Tomoya Taguchi, Yanan Wang, Hidenori Goto, Ritsuko Eguchi, Rie Horie, Kazumasa Horigane, Kaya Kobayashi, Jun Akimitsu, Hirofumi Ishii, Yen Fa Liao, Hitoshi Yamaoka, Yoshihiro Kubozono
    • Journal Title

      Journal of Physics Condensed Matter

      Volume: 32 Issue: 2 Pages: 025704-025704

    • DOI

      10.1088/1361-648x/ab4605

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Synthesis of [7]phenacene incorporating tetradecyl chains in the axis positions and its application in field-effect transistors2020

    • Author(s)
      Hideki Okamoto, Shino Hamao, Keiko Kozasa, Yanan Wang, Yoshihiro Kubozono, Yong-He Pan, Yu-Hsiang Yen, Germar Hoffmann, Fumito Tani, Kenta Goto
    • Journal Title

      Journal of Materials Chemistry C

      Volume: 8 Issue: 22 Pages: 7422-7435

    • DOI

      10.1039/d0tc00272k

    • NAID

      120007027581

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Fabrication of flexible high-performance organic field-effect transistors using phenacene molecules and their application toward flexible CMOS inverters2019

    • Author(s)
      Pompei Emanuela、Turchetti Claudio、Hamao Shino、Miura Akari、Goto Hidenori、Okamoto Hideki、Fujiwara Akihiko、Eguchi Ritsuko、Kubozono Yoshihiro
    • Journal Title

      Journal of Materials Chemistry C

      Volume: 印刷中 Issue: 20 Pages: 6022-6033

    • DOI

      10.1039/c8tc05824e

    • Related Report
      2019 Annual Research Report 2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Pressure-induced superconductivity in Bi2-xSbxTe3-ySey2019

    • Author(s)
      Tong He, Xiaofan Yang, Tomoya Taguchi, Teppei Ueno, Kaya Kobayashi, Jun Akimitsu, Hitoshi Yamaoka, Hirofumi Ishii, Yen-Fa Liao, Hiromi Ota, Hidenori Goto, Ritsuko Eguchi, Kensei Terashima, Takayoshi Yokoya, Harald O. Jeschke, Xianxin Wu, Yoshihiro Kubozono
    • Journal Title

      PHYSICAL REVIEW B

      Volume: 100 Issue: 9 Pages: 094525-094525

    • DOI

      10.1103/physrevb.100.094525

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Preparation and characterization of superconducting Ba1-xCsxTi2Sb2O, and its pressure dependence of superconductivity2019

    • Author(s)
      Wang Yanan, Yang Xiaofan, Taguchi Tomoya, Li Huan, He Tong, Goto Hidenori, Eguchi Ritsuko, Miyazaki Takafumi, Liao Yen-Fa, Ishii Hirofumi, Kubozono Yoshihiro
    • Journal Title

      JAPANESE JOURNAL OF APPLIED PHYSICS

      Volume: 58 Issue: 11 Pages: 110603-110603

    • DOI

      10.7567/1347-4065/ab4ef5

    • NAID

      210000157392

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Superconducting properties of (NH3) y Li x FeSe0.5Te0.5 under pressure2019

    • Author(s)
      Yang Xiaofan、He Tong、Taguchi Tomoya、Li Huan、Wang Yanan、Goto Hidenori、Eguchi Ritsuko、Miyazaki Takafumi、Yamaoka Hitoshi、Ishii Hirofumi、Liao Yen-Fa、Kubozono Yoshihiro
    • Journal Title

      New Journal of Physics

      Volume: 21 Issue: 11 Pages: 113010-113010

    • DOI

      10.1088/1367-2630/ab5034

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Synthesis of the extended phenacene molecules, [10]phenacene and [11]phenacene, and their performance in a field-effect transistor2019

    • Author(s)
      Okamoto Hideki、Hamao Shino、Eguchi Ritsuko、Goto Hidenori、Takabayashi Yasuhiro、Yen Paul Yu-Hsiang、Liang Luo Uei、Chou Chia-Wei、Hoffmann Germar、Gohda Shin、Sugino Hisako、Liao Yen-Fa、Ishii Hirofumi、Kubozono Yoshihiro
    • Journal Title

      Scientific Reports

      Volume: 9 Issue: 1 Pages: 4009-4009

    • DOI

      10.1038/s41598-019-39899-4

    • NAID

      120006777515

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Fermi level tuning of Ag-doped Bi2Se3 topological insulator2019

    • Author(s)
      Uesugi Eri、Uchiyama Takaki、Goto Hidenori、Ota Hiromi、Ueno Teppei、Fujiwara Hirokazu、Terashima Kensei、Yokoya Takayoshi、Matsui Fumihiko、Akimitsu Jun、Kobayashi Kaya、Kubozono Yoshihiro
    • Journal Title

      Scientific Reports

      Volume: 9 Issue: 1 Pages: 5376-5376

    • DOI

      10.1038/s41598-019-41906-7

    • NAID

      120006777514

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Surface Structure of Organic Semiconductor [n]Phenacene Single Crystals2018

    • Author(s)
      Wakabayashi Yusuke、Nakamura Masanari、Sasaki Kaori、Maeda Takahiro、Kishi Yuutaro、Ishii Hiroyuki、Kobayashi Nobuhiko、Yanagisawa Susumu、Shimo Yuma、Kubozono Yoshihiro
    • Journal Title

      Journal of the American Chemical Society

      Volume: 140 Issue: 43 Pages: 14046-14049

    • DOI

      10.1021/jacs.8b08811

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Preparation and characterization of a new metal-intercalated graphite superconductor2018

    • Author(s)
      Yang Xiaofan、Taguchi Tomoya、Wang Yanan、He Tong、Uchiyama Takaki、Takai Akihisa、Zhi Lei、Miyazaki Takafumi、Goto Hidenori、Eguchi Ritsuko、Ishii Hirofumi、Liao Yen-Fa、Yamaoka Hitoshi、Kubozono Yoshihiro
    • Journal Title

      Materials Research Express

      Volume: 6 Issue: 1 Pages: 016003-016003

    • DOI

      10.1088/2053-1591/aae9d2

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Pressure driven superconductivity in topological materials2019

    • Author(s)
      Yoshihiro Kubozono
    • Organizer
      Superstripes 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Pressure Driven Superconductivity in Topological Insulators2019

    • Author(s)
      Yoshihiro Kubozono
    • Organizer
      MRM 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Pressure-induced superconductivity in metal doped topological materials and two dimensional materials2019

    • Author(s)
      Y. Kubozono
    • Organizer
      The first international workshop on Momentum Microscopy & Spectroscopy for Materials Science
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 分子吸着によるグラフェンの散乱効果2019

    • Author(s)
      高井彰久、後藤秀徳、内山貴生、Zhi Lei, 江口律子、久保園芳博
    • Organizer
      日本物理学会第74回年次大会
    • Related Report
      2018 Research-status Report
  • [Presentation] Pressure-induced superconductivity in metal-doped two-dimensional layered materials2019

    • Author(s)
      Xiaofan Yang, Tong He, Tomoya Taguchi, Yanan Wang, Huan Li, Hirofumi Ishii, Hitoshi Yamaoka, Hidenori Goto, Ritsuko Eguchi, Yoshihiro Kubozono
    • Organizer
      日本物理学会第74回年次大会
    • Related Report
      2018 Research-status Report
  • [Presentation] Carrier doping of graphene with electric-field effect and doping effect2018

    • Author(s)
      Hidenori Goto, Ritsuko Eguchi, Yoshihiro Kubozono
    • Organizer
      EMRS 2018 Fall meeting
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Pressure-induced superconductivity in Ag-doped Bi2Se3 topological insulator2018

    • Author(s)
      Tong He, Kaya Kobayashi, Jun Akimitsu, Hidenori Goto, Yoshihiro Kubozono
    • Organizer
      EMRS 2018 Fall meeting
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Book] Physics ans Chemistry of Carbon-Based Materials: Basic and Applications2019

    • Author(s)
      Yoshihiro Kubozono
    • Total Pages
      332
    • Publisher
      Springer
    • ISBN
      9789811334160
    • Related Report
      2019 Annual Research Report
  • [Book] Physics and Chemistry of Carbon-Based Materials2019

    • Author(s)
      Yoshihiro Kubozono (editor) / Chapter 8: Yoshihiro Kubozono
    • Publisher
      Springer
    • Related Report
      2018 Research-status Report
  • [Book] 3D local structure and Functional Design of Materials2019

    • Author(s)
      Hiroshi Daimon and Yuji C. Sasaki (eitor) / Chapter 8.1: Yoshihiro Kubozono, Hidenori Goto, Hiroko Yamda
    • Publisher
      Maruzen pub. / World Scientific
    • Related Report
      2018 Research-status Report
  • [Remarks]

    • URL

      http://interfa.rlss.okayama-u.ac.jp/publication.html

    • Related Report
      2019 Annual Research Report
  • [Remarks] 岡山大学異分野基礎科学研究所超伝導・機能材料研究コア (Kubozono group)

    • URL

      http://interfa.rlss.okayama-u.ac.jp/

    • Related Report
      2018 Research-status Report

URL: 

Published: 2018-07-25   Modified: 2021-02-19  

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