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NMR study on the inelastic scattering rate governing the spin-lock in the topological insulator

Research Project

Project/Area Number 15K05148
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Condensed matter physics II
Research InstitutionSophia University

Principal Investigator

Takayuki GOTO  上智大学, 理工学部, 教授 (90215492)

Co-Investigator(Kenkyū-buntansha) 田邉 洋一  東北大学, 理学研究科, 助教 (80574649)
Project Period (FY) 2015-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywordsトポロジカル絶縁体 / 薄膜合成 / NMR / μSR / 薄膜 / NMR / 表面スピンテキスチャ
Outline of Final Research Achievements

The original purpose of this study is to investigate microscopically the spinlock state within the surface conductive nano-layer of topological insulators. For this purpose, we have developed a method for epitaxial growth of bulk insulating three-dimensional topological insulator (3D-TI) Bi2-xSbxTe3-ySey (BSTS) ultrathin films, ranging from a few quintuple to several hundreds of layers, on mica in a large-area (1 cm2) via catalyst-free physical vapor deposition.

Report

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

    (13 results)

All 2017 2016 2015

All Journal Article (4 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 4 results,  Open Access: 3 results,  Acknowledgement Compliant: 3 results) Presentation (9 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Thermoelectric properties of 3D topological insulator: Direct observation of topological surface and its gap opened states2017

    • Author(s)
      "Stephane Yu Matsushita, Khuong Kim Huynh, Harukazu Yoshino, Ngoc Han Tu, Yoichi Tanabe, and Katsumi Tanigaki"
    • Journal Title

      Physical Revew Materials

      Volume: 1

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Large-Area and Transferred High-Quality Three-Dimensional Topological Insulator Bi2-xSbxTe3-ySey Ultrathin Film by Catalyst-Free Physical Vapor Deposition2017

    • Author(s)
      Ngoc Han Tu, Yoichi Tanabe, Yosuke Satake, Khuong Kim Huynh, Katsumi Tanigaki
    • Journal Title

      Nano letters

      Volume: 17 Issue: 4 Pages: 2354-2360

    • DOI

      10.1021/acs.nanolett.6b05260

    • Related Report
      2017 Annual Research Report 2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] In-plane topological p-n junction in the three dimensional topological insulator Bi2-xSbxTe3-ySey2016

    • Author(s)
      Ngoc Han Tu, Yoichi Tanabe, Yosuke Satake, Khuong Kim Huynh, Katsumi Tanigaki
    • Journal Title

      Nature Communications

      Volume: 7

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Low-energy μSR Study on the Tetradymite Topological Insulator Bi1.5Sb0.5TeSe2015

    • Author(s)
      Takayuki Goto, Kazuki Matsui, Tadashi Adachi, Tomi Ohtsuki, Ngoc Han Tu, Yoichi Tanabe, Katsumi Tanigaki, Isao Watanabe, Zaher Salman, Andreas Suter, Thomas Prokscha
    • Journal Title

      Physics Procedia Volume

      Volume: 75 Pages: 100-105

    • DOI

      10.1016/j.phpro.2015.12.014

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Presentation] 磁場中輸送特性から見た3次元トポロジカル絶縁体Bi2-xSbxTe3-ySey薄膜の電子状態2017

    • Author(s)
      田邉洋一, Tu Ngoc Han, 佐竹遥介, Huynh Kim Khuong, 松下ステファン悠, 谷垣勝巳
    • Organizer
      日本物理学会2016年秋季大会(口頭発表) 2017年9月23日(岩手大学)
    • Related Report
      2017 Annual Research Report
  • [Presentation] 有機/無機界面での電荷移動を用いて作製した3次元トポロジカル絶縁体p-n接合デバイスの輸送現象2016

    • Author(s)
      田邉洋一, Tu Ngoc Han, 佐竹遥介, Huynh Kim Khuong, 谷垣勝巳
    • Organizer
      日本物理学会2016年秋季大会
    • Place of Presentation
      金沢大学(石川県金沢市)
    • Year and Date
      2016-09-15
    • Related Report
      2016 Research-status Report
  • [Presentation] Thickness Dependence of Electric Transport in three - dimensional topological insulator Bi1.5Sb0.5Te1.7Se1.3 ultrathin films2016

    • Author(s)
      Ngoc Han Tu, Yoichi Tanabe, Stephane Yu Mastushita, Khuong Kim HuynhB Kastumi Tanigaki
    • Organizer
      日本物理学会2016年秋季大会
    • Place of Presentation
      金沢大学(石川県金沢市)
    • Year and Date
      2016-09-15
    • Related Report
      2016 Research-status Report
  • [Presentation] Low-energy μSR study on the tetradymite topological insulator Bi1.5Sb0.5TeSe22016

    • Author(s)
      T. Goto, K. Matsui, Tu Ngoc Han, Yoichi Tanabe, Katsumi Tanigaki
    • Organizer
      Frontier of the Muon Science Applications RIKEN-RAL Muon Facility 25-Years Operation Cerebration
    • Place of Presentation
      理化学研究所(埼玉県和光市)
    • Year and Date
      2016-02-16
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] Low-energy μSR study on the thin-film of tetradymite topological insulator Bi1.5Sb0.5TeSe22016

    • Author(s)
      K. Matsui, T. Goto, Tu Ngoc Han, Yoichi Tanabe, Katsumi Tanigaki
    • Organizer
      International USMM &CMSI Workshop
    • Place of Presentation
      Hongo Campus, The University of Tokyo, Tokyo, Japan
    • Year and Date
      2016-01-05
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] Topological p-n junction in three dimentional topological insulator Bi2-xSbxTe3-ySey fabricated by deposition of F4-TCNQ organic molecule2016

    • Author(s)
      Yoichi Tanabe, Ngoc Han Tu, Stephane Yu Mastushita, Khuong Kim HuynhB Kastumi Tanigaki
    • Organizer
      The 2nd Conference on Condensed Matter Physics
    • Place of Presentation
      Nangjin (China)
    • Related Report
      2016 Research-status Report
  • [Presentation] Van deer Waals epitaxial growth of High quality Bi2-xSbxTe3-ySey ultrathin film grown by the catalyst free physical vappor deposition2016

    • Author(s)
      Yoichi Tanabe, Ngoc Han Tu, Stephane Yu Mastushita, Khuong Kim HuynhB Kastumi Tanigaki
    • Organizer
      Energy Materials Nanotechnology
    • Place of Presentation
      Prague (Czech)
    • Related Report
      2016 Research-status Report
  • [Presentation] Large - area synthesis and nondestructive transfer process of high - quality Bi2-xSbxTe3-ySey films2015

    • Author(s)
      Tu Ngoc Han, Yoichi Tanabe, Yosuke Satake, Khuong, Kim Huynh, Katsumi Tanigaki
    • Organizer
      日本物理学会2015年秋季大会
    • Place of Presentation
      関西大学(大阪府吹田市)
    • Year and Date
      2015-09-16
    • Related Report
      2015 Research-status Report
  • [Presentation] Low-energy SR study on the tetradymite topological insulator Bi1.5Sb0.5TeSe22015

    • Author(s)
      Takayuki Goto, Kazuki Matsui, Tadashi Adachi, Tomi Ohtsuki, Ngoc Han Tu, Yoichi Tanabe, Katsumi Tanigaki, Isao Watanabe, Zaher Salman, Andreas Suter and Thomas Prokscha
    • Organizer
      20th International Conference on Magnetism ICM2015
    • Place of Presentation
      Palau de Congress de Catalunya(Barcelona, Spain)
    • Year and Date
      2015-07-05
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research

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Published: 2015-04-16   Modified: 2020-05-15  

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