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Elucidating the peculiar properties of inversion-symmetry-broken surface superconductors with scanning tunneling microscopy

Research Project

Project/Area Number 15H05453
Research Category

Grant-in-Aid for Young Scientists (A)

Allocation TypeSingle-year Grants
Research Field Condensed matter physics I
Research InstitutionTokyo Institute of Technology

Principal Investigator

Hirahara Toru  東京工業大学, 理学院, 准教授 (30451818)

Research Collaborator TANAKA Tomoaki  
YOSHINO Ryo  
AKIYAMA Kenta  
Project Period (FY) 2015-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥23,790,000 (Direct Cost: ¥18,300,000、Indirect Cost: ¥5,490,000)
Fiscal Year 2017: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2016: ¥12,480,000 (Direct Cost: ¥9,600,000、Indirect Cost: ¥2,880,000)
Fiscal Year 2015: ¥8,190,000 (Direct Cost: ¥6,300,000、Indirect Cost: ¥1,890,000)
Keywords超伝導 / 走査トンネル顕微鏡 / ラシュバ効果 / 物性実験 / 表面・界面 / 表面・界面物性 / 超薄膜
Outline of Final Research Achievements

We report the relationship between the surface superstructure of SrTiO3(001) (STO) substrate
and superconducting properties of single unit cell (1 UC) FeSe films using scanning tunneling
microscopy/spectroscopy (STM/STS). Under reflection high-energy-electron diffraction (RHEED) observation, we controlled the periodicity of the STO surface to 2×1 and √2×√2 by changing the annealing temperature and grew high-quality FeSe films. We found that the substrate periodicity can be imaged through the 1 UC FeSe from high-resolution STM observations and obtained clear evidence that the superconducting gap size depends on the surface periodicity (10-15 meV on 2×1 and 15-17.5 meV on √2×√2) for the first time. The results are discussed in terms of the surface termination of the STO substrate.

Report

(4 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Annual Research Report
  • 2015 Annual Research Report
  • Research Products

    (53 results)

All 2018 2017 2016 2015 Other

All Int'l Joint Research (3 results) Journal Article (9 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 9 results,  Open Access: 2 results,  Acknowledgement Compliant: 4 results) Presentation (40 results) (of which Int'l Joint Research: 5 results,  Invited: 10 results) Remarks (1 results)

  • [Int'l Joint Research] ドナスティア物理国際研究所(スペイン)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] トムスク州立大学(ロシア連邦)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] 上海交通大学(中国)

    • Related Report
      2015 Annual Research Report
  • [Journal Article] Flattening and manipulation of the electronic structure of h-BN/Rh(111) nanomesh upon Sn intercalation2018

    • Author(s)
      Sugiyama Yuya、Bernard Carlo、Okuyama Yuma、Ideta Shin-ichiro、Tanaka Kiyohisa、Greber Thomas、Hirahara Toru
    • Journal Title

      Surface Science

      Volume: 672-673 Pages: 33-38

    • DOI

      10.1016/j.susc.2018.03.007

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Large-Gap Magnetic Topological Heterostructure Formed by Subsurface Incorporation of a Ferromagnetic Layer2017

    • Author(s)
      T. Hirahara, S. V. Eremeev, T. Shirasawa, Y. Okuyama, T. Kubo, R. Nakanishi, R. Akiyama, A. Takayama, T. Hajiri, S. Ideta, M. Matsunami, K. Sumida, K. Miyamoto, Y. Takagi, K. Tanaka, T. Okuda, T. Yokoyama, S. Kimura, S. Hasegawa, E. V. Chulkov
    • Journal Title

      NANO Letters

      Volume: 17 Issue: 6 Pages: 3493-3500

    • DOI

      10.1021/acs.nanolett.7b00560

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Growth and Atomic Structure of Tellurium Thin Films Grown on Bi2Te32017

    • Author(s)
      Y. Okuyama, Y. Sugiyama, S. Ideta, K. Tanaka, and T. Hirahara
    • Journal Title

      Applied Surface Science

      Volume: 398 Pages: 125-129

    • DOI

      10.1016/j.apsusc.2016.11.196

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Development of a Convenient <i>in situ </i>UHV Scanning Tunneling Potentiometry System Using a Tip Holder Equipped with Current-Injection Wires2016

    • Author(s)
      T. Nakamura, R. Yoshino, R. Hobara,S. Hasegawa, and T. Hirahara
    • Journal Title

      e-Journal of Surface Science and Nanotechnology

      Volume: 14 Issue: 0 Pages: 216-224

    • DOI

      10.1380/ejssnt.2016.216

    • NAID

      130005282046

    • ISSN
      1348-0391
    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Role of Quantum and Surface-State Effects in the Bulk Fermi Level Position of Ultrathin Bi films2015

    • Author(s)
      T. Hirahara, T. Shirai, T. Hajiri, M. Matsunami, K. Tanaka, S. Kimura, S. Hasegawa, and K. Kobayashi
    • Journal Title

      Physical Review Letters

      Volume: 115 Issue: 10

    • DOI

      10.1103/physrevlett.115.106803

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Direct observation of a gap opening in topological interface states of MnSe/Bi2Se3 heterostructure2015

    • Author(s)
      A.V. Matetskiy, I. A. Kibirev, T. Hirahara, S. Hasegawa, A.V. Zotov, and A.A. Saranin
    • Journal Title

      Applied Physics Letters

      Volume: 107 Issue: 9

    • DOI

      10.1063/1.4930151

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Target element dependent spin–orbit coupling in polarized 4He+ ion2015

    • Author(s)
      鈴木拓、酒井治、一ノ倉聖、平原徹、長谷川修司
    • Journal Title

      Nuclear Instruments and Methods in Physics Research B

      Volume: 印刷中 Pages: 163-166

    • DOI

      10.1016/j.nimb.2014.11.055

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] The Rashba and quantum size effects in ultrathin Bi films2015

    • Author(s)
      T. Hirahara
    • Journal Title

      Journal of Electron Spectroscopy and Related Phenomena

      Volume: 201 Pages: 98-104

    • DOI

      10.1016/j.elspec.2014.08.004

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Spin-Dependent Ion Scattering on Bismuth Surfaces2015

    • Author(s)
      一ノ倉聖, 平原徹, 酒井治, 長谷川修司, 鈴木拓
    • Journal Title

      Hyomen Kagaku

      Volume: 36 Issue: 8 Pages: 408-411

    • DOI

      10.1380/jsssj.36.408

    • NAID

      130005093814

    • ISSN
      0388-5321, 1881-4743
    • Related Report
      2015 Annual Research Report
    • Peer Reviewed
  • [Presentation] 近接効果によるトポロジカル表面状態の制御2018

    • Author(s)
      平原 徹
    • Organizer
      第一回HiSORスピン物性研究会~高輝度光源を活かしたスピン分解光電子分光研究の展望~
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] MnとTeを蒸着したBi2Te3の電子構造とその温度依存性2018

    • Author(s)
      横山喜一、奥山裕磨、宮本幸治、出田真一郎、奥田太一、田中清尚、平原徹
    • Organizer
      日本物理学会第73回年次大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] SrTiO3基板上の単層FeSeの超伝導特性の基板表面超構造依存性2018

    • Author(s)
      秋山健太、田中友晃、芳野諒、平原徹
    • Organizer
      日本物理学会第73回年次大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Large-Gap Magnetic Topological Heterostructure Formed by Subsurface Incorporation of a Ferromagnetic Layer2018

    • Author(s)
      T. Hirahara, S. V. Eremeev, T. Shirasawa, Y. Okuyama, T. Kubo, R. Nakanishi, R. Akiyama, A. Takayama, T. Hajiri, S. Ideta, M. Matsunami, K. Sumida, K. Miyamoto, Y. Takagi, K. Tanaka, T. Okuda, T. Yokoyama, S. Kimura, S. Hasegawa, and E. V. Chulkov
    • Organizer
      BEC2018
    • Related Report
      2017 Annual Research Report
  • [Presentation] トポロジカル絶縁体表面に埋め込まれた強磁性層2017

    • Author(s)
      平原 徹
    • Organizer
      第8回 真空・表面科学若手研究会
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] 自己組織化によって形成された磁性トポロジカル絶縁体ヘテロ接合2017

    • Author(s)
      平原 徹
    • Organizer
      物性研短期研究会「光で 見る・操る 電子物性科学の最前線~強相関, トポロジー, 低次元, ダイナミクス~」
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] Heterostructure of a topological insulator/magnetic insulator ultrathin film2017

    • Author(s)
      Y. Okuyama, S. V. Eremeeev, R. Nakanishi, R. Akiyama, T. Shirasawa, Y. Sugiyama, K. Sumida, K. Miyamoto, T. Okuda, S. Ideta, K. Tanaka, E. V. Chulkov, S. Hasegawa, and T. Hirahara
    • Organizer
      ISSS-8
    • Related Report
      2017 Annual Research Report
  • [Presentation] Local Superconducting Properties of Single-Unit-Cell FeSe Films on SrTiO32017

    • Author(s)
      T. Tanaka, R. Yoshino, K. Akiyama and T. Hirahara
    • Organizer
      ISSS-8
    • Related Report
      2017 Annual Research Report
  • [Presentation] MnとTeを蒸着したBi2Te3の電子構造とその温度依存性2017

    • Author(s)
      横山喜一、奥山裕磨、宮本幸治、奥田太一、田中清尚、平原徹
    • Organizer
      第8回 真空・表面科学若手研究会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 磁性絶縁体/トポロジカル絶縁体超薄膜ヘテロ構造の電子状態と磁化特性2017

    • Author(s)
      奥山裕磨、S. V. Eremeeev、中西亮介、秋山了太、白澤徹郎、角田一樹、宮本幸治、奥田太一、出田真一郎、田中清尚、高木康多、横山利彦、E. V. Chulkov、長谷川修司、平原徹
    • Organizer
      第8回 真空・表面科学若手研究会
    • Related Report
      2017 Annual Research Report
  • [Presentation] SrTiO3基板上の単一ユニットセルFeSeの超伝導特性:表面超構造依存性2017

    • Author(s)
      田中友晃, 芳野諒, 秋山健太, 平原徹
    • Organizer
      第8回 真空・表面科学若手研究会
    • Related Report
      2017 Annual Research Report
  • [Presentation] MnとTeを蒸着したBi2Te3の電子構造とその温度依存性2017

    • Author(s)
      横山喜一、奥山裕磨、宮本幸治、奥田太一、田中清尚、平原徹
    • Organizer
      UVSORシンポジウム2017
    • Related Report
      2017 Annual Research Report
  • [Presentation] 磁性絶縁体/トポロジカル絶縁体超薄膜ヘテロ構造の電子状態と磁化特性2017

    • Author(s)
      奥山裕磨、S. V. Eremeeev、中西亮介、秋山了太、白澤徹郎、角田一樹、宮本幸治、奥田太一、出田真一郎、田中清尚、高木康多、横山利彦、E. V. Chulkov、長谷川修司、平原徹
    • Organizer
      UVSORシンポジウム2017
    • Related Report
      2017 Annual Research Report
  • [Presentation] トポロジカル絶縁体/磁性絶縁体超薄膜ヘテロ接合の電子状態:膜厚依存性2017

    • Author(s)
      奥山裕磨、石川遼、黒田真司、平原徹
    • Organizer
      日本物理学会2017年秋季大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] SrTiO3基板上の単一ユニットセルFeSeの局所的な超伝導特性2017

    • Author(s)
      田中友晃, 芳野諒, 秋山健太, 平原徹
    • Organizer
      日本物理学会2017年秋季大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Inducing magnetism in topological insulators by self organized incorporation of a ferromagnetic layer2017

    • Author(s)
      Toru Hirahara
    • Organizer
      Physics at the borderline between 1D and 2D
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Dirac Electrons in Condensed Matter Physics2017

    • Author(s)
      Toru Hirahara
    • Organizer
      IOP Publishing Young Researchers' Meeting: Frontiers in Fundamental and Applied Physics
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ビスマス系超薄膜・ヘテロ接合の電子構造とスピン物性2017

    • Author(s)
      平原 徹
    • Organizer
      日本磁気学会第62回スピンエレクトロニクス専門研究会
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] SrTiO3基板上の単一ユニットセルFeSeの電子状態:表面超構造依存性2017

    • Author(s)
      田中友晃, 芳野諒, 平原徹
    • Organizer
      日本物理学会 第72回年次大会
    • Related Report
      2016 Annual Research Report
  • [Presentation] トポロジカル絶縁体/磁性絶縁体超薄膜ヘテロ接合 I:結晶構造と電子状態2017

    • Author(s)
      奥山裕磨, S. V. Eremeev, 白澤徹郎, 杉山裕弥, 角田一樹, 宮本幸治, 奥田太一, 出田真一郎, 田中清尚, E. V. Chulkov, 平原徹
    • Organizer
      日本物理学会 第72回年次大会
    • Related Report
      2016 Annual Research Report
  • [Presentation] トポロジカル絶縁体/磁性絶縁体超薄膜ヘテロ接合II:磁化特性2017

    • Author(s)
      中西亮介, 秋山了太, 奥山裕磨, 高木康多, S. V. Eremeev, E. V. Chulkov, 横山利彦, 長谷川修司, 平原徹
    • Organizer
      日本物理学会 第72回年次大会
    • Related Report
      2016 Annual Research Report
  • [Presentation] Heterostructure of a topological insulator/magnetic insulator ultrathin film2017

    • Author(s)
      Y. Okuyama, S. V. Eremeeev, R. Nakanishi, R. Akiyama, T. Shirasawa, Y. Sugiyama, K. Sumida, K. Miyamoto, T. Okuda, S. Ideta, K. Tanaka, E. V. Chulkov, S. Hasegawa, and T. Hirahara
    • Organizer
      IOP Publishing Young Researchers' Meeting: Frontiers in Fundamental and Applied Physics
    • Related Report
      2016 Annual Research Report
  • [Presentation] Local Superconducting Properties of a Single Unit-Cell FeSe Thin Film on SrTiO32017

    • Author(s)
      T. Tanaka, R. Yoshino, and T. Hirahara
    • Organizer
      IOP Publishing Young Researchers' Meeting: Frontiers in Fundamental and Applied Physics
    • Related Report
      2016 Annual Research Report
  • [Presentation] ビスマス超薄膜における半金属半導体転移の検証II2016

    • Author(s)
      平原徹, 白井皓寅, 羽尻哲也, 松波雅治, 田中清尚, 木村真一, 長谷川修司, 小林功佳
    • Organizer
      日本物理学会 第71回年次大会
    • Place of Presentation
      東北学院大学
    • Year and Date
      2016-03-19
    • Related Report
      2015 Annual Research Report
  • [Presentation] Growth and Electronic Structure of a Tellurium Thin Film on Bi2Te32016

    • Author(s)
      Yuma Okuyama, Yuya Sugiyama, and Toru Hirahara
    • Organizer
      The 20th Hiroshima International Symposium on Synchrotron Radiation
    • Place of Presentation
      Hiroshima University
    • Year and Date
      2016-03-09
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ビスマス超薄膜における半金属半導体転移の検証2016

    • Author(s)
      平原徹
    • Organizer
      第一回 ディラック電子系マルチフェロイクス研究会
    • Place of Presentation
      東京理科大学
    • Year and Date
      2016-01-28
    • Related Report
      2015 Annual Research Report
  • [Presentation] トポロジカル絶縁体/磁性絶縁体超薄膜ヘテロ構造:磁化によるディラックコーン変調に向けて2016

    • Author(s)
      平原 徹
    • Organizer
      物性研短期研究会「走査トンネル顕微鏡による物性研究の現状と展望」
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] The Rashba and quantum size effects in ultrathin Bi films2016

    • Author(s)
      Toru Hirahara
    • Organizer
      AVS 63rd International Symposium & Exhibition
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 表面・ナノ薄膜の電子物性と原子構造:新奇ディラック電子創出に向けて2016

    • Author(s)
      平原 徹
    • Organizer
      大阪大学大学院理学研究科物理学専攻セミナー
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] 単一ユニットセルFeSeの構造と電子状態:STM/STS観察2016

    • Author(s)
      田中友晃, 芳野諒, 平原徹
    • Organizer
      物性研短期研究会「走査トンネル顕微鏡による物性研究の現状と展望」
    • Related Report
      2016 Annual Research Report
  • [Presentation] 単一ユニットセルFeSeの構造と電子状態:STM/STS観察2016

    • Author(s)
      田中友晃, 芳野諒, 平原徹
    • Organizer
      日本表面科学会関東支部 第4回関東支部セミナー
    • Related Report
      2016 Annual Research Report
  • [Presentation] Bi2Te3基板上におけるTe単結晶薄膜の作成と電子状態測定2016

    • Author(s)
      奥山裕磨, 杉山裕弥, 出田真一郎, 田中清尚, 平原徹
    • Organizer
      日本物理学会 2016年秋季大会
    • Related Report
      2016 Annual Research Report
  • [Presentation] RHEEDとSTMによるSrTiO3上の1UC-FeSeの成長過程と構造評価2016

    • Author(s)
      芳野諒, 田中友晃, 平原徹
    • Organizer
      日本物理学会 2016年秋季大会
    • Related Report
      2016 Annual Research Report
  • [Presentation] h-BN上へのスタネンの作製と評価2016

    • Author(s)
      杉山裕弥, 奥山裕磨, 出田真一郎, 田中清尚, C. Bernard, T. Greber, 平原徹
    • Organizer
      日本物理学会 2016年秋季大会
    • Related Report
      2016 Annual Research Report
  • [Presentation] 単一ユニットセルFeSeの構造と電子状態:STM/STS観察2016

    • Author(s)
      田中友晃, 芳野諒, 平原徹
    • Organizer
      日本物理学会 2016年秋季大会
    • Related Report
      2016 Annual Research Report
  • [Presentation] SrTiO3 基板上のFeSe 薄膜の作成と構造評価2016

    • Author(s)
      田中友晃, 芳野諒, 平原徹
    • Organizer
      日本表面科学会第1回関東支部講演大会
    • Related Report
      2016 Annual Research Report
  • [Presentation] Bi2Te3基板上のTe薄膜の成長と電子状態2016

    • Author(s)
      奥山裕磨, 杉山裕弥, 平原徹
    • Organizer
      日本表面科学会第1回関東支部講演大会
    • Related Report
      2016 Annual Research Report
  • [Presentation] Surface and Bulk States of Ultrathin Bi films: Electronic Structure and Transport Properties2015

    • Author(s)
      T. Hirahara, M. Aitani, T. Shirai, S. Ichinokura, M. Hanaduka, D. Y. Shin, T. Hajiri, M. Matsunami, K. Tanaka, S. Kimura, K. Kobayashi, and S. Hasegawa
    • Organizer
      15th International Conference on the Formation of Semiconductor interfaces
    • Place of Presentation
      International Conference Center Hiroshima
    • Year and Date
      2015-11-15
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ビスマス超薄膜における半金属半導体転移の検証2015

    • Author(s)
      平原徹, 白井皓寅, 羽尻哲也, 松波雅治, 田中清尚, 木村真一, 長谷川修司, 小林功佳
    • Organizer
      UVSORシンポジウム
    • Place of Presentation
      分子科学研究所
    • Year and Date
      2015-11-06
    • Related Report
      2015 Annual Research Report
  • [Presentation] 表面・界面でのスピン軌道相互作用:ビスマス系化合物を中心に2015

    • Author(s)
      平原徹
    • Organizer
      第七回 神楽坂 凝縮系理論勉強会
    • Place of Presentation
      東京理科大学
    • Year and Date
      2015-08-08
    • Related Report
      2015 Annual Research Report
    • Invited
  • [Remarks] 平原研究室WEBページ

    • URL

      http://www.surfnano.phys.titech.ac.jp/index.html

    • Related Report
      2017 Annual Research Report

URL: 

Published: 2015-04-16   Modified: 2022-09-01  

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