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Electric fieldand pressure induced novelquantum phenomena in two-dimensional oxides

Research Project

Project/Area Number 22540368
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Condensed matter physics II
Research InstitutionHiroshima University

Principal Investigator

NAKAMURA Fumihiko  広島大学, 大学院・先端物質科学研究科, 助教 (40231477)

Project Period (FY) 2010 – 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2010: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords強相関電子系 / 超伝導 / 圧力効果 / 磁性 / モット絶縁体 / 電場効果 / 金属-絶縁体転移 / Ru酸化物 / トリプレット超伝導 / モット転移 / 遍歴電子強磁性 / 金属-絶縁体転移
Research Abstract

Here we report that the Mott insulator Ca2RuO4shows unique insulator-metal transition induced by applying pressure or a dry-battery level voltage at room temperature. Perhaps the most peculiar of the present findings is that the induced metal can be maintained to low temperature by a weak current. Moreover, we have observed the itinerant FM states as the ground state of the metallic states.

Report

(4 results)
  • 2012 Annual Research Report   Final Research Report ( PDF )
  • 2011 Annual Research Report
  • 2010 Annual Research Report
  • Research Products

    (22 results)

All 2013 2012 2011 2010 Other

All Journal Article (9 results) (of which Peer Reviewed: 9 results) Presentation (13 results)

  • [Journal Article] Control of the electronic states of Ca2RuO4by uniaxial pressure2012

    • Author(s)
      Ryo Ishikawa, Haruka Taniguchi, Swee Kuan Goh, Shingo Yonezawa, Fumihiko Nakamura, and Yoshiteru Maeno
    • Journal Title

      Journal of Physics

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Charge stripe order near the surface of 12-percent doped La2-xSrxCuO42012

    • Author(s)
      H.-H. Wu,M. Buchholz, C. Trabant, C. F. Chang, A. C. Komarek, F. Heigl, M. v. Zimmermann, M. Cwik, F. Nakamura, M. Braden,and C
    • Journal Title

      Schuβler-Langeheine Nature Communications

      Volume: 3 Issue: 1

    • DOI

      10.1038/ncomms2019

    • Related Report
      2012 Annual Research Report 2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Interplay between crystal electric field and magnetic exchange anisotropies in the heavy-fermion anti- ferromagnet YbRhSb under pressure2012

    • Author(s)
      K. Umeo, H. Yamane, H. Kubo,Y. Muro, F. Nakamura, T. Suzuki, T. Takabatake, K. Sengupta, M.K.Forthaus, and M. M
    • Journal Title

      Abd-Elmeguid, Physical Review

      Volume: 85

    • NAID

      120005198241

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Control of the electronic states of Ca2RuO4 by uniaxial pressure2012

    • Author(s)
      R. Ishikawa, H. Taniguchi, S. K. Goh, S. Yonezawa, F. Nakamura, Y. Macno
    • Journal Title

      Journal of Physics : Conference Series

      Volume: 400 Issue: 2 Pages: 22-036

    • DOI

      10.1088/1742-6596/400/2/022036

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Interplay between crystal electric field and magnetic exchange anisotropies in the heavy-fermion antiferromagnet YbRhSb under pressure2012

    • Author(s)
      K.Umeo
    • Journal Title

      Phys.Rev.B

      Volume: 85 Issue: 2 Pages: 24412-24412

    • DOI

      10.1103/physrevb.85.024412

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 小学生を対象とした理科特別授業-「低温のふしぎ実験」とその意義-2011

    • Author(s)
      中村文彦
    • Journal Title

      大学の物理教育

      Volume: 17 Pages: 76-79

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Pressure induced novel-phenomena in Mott insulator Ca2RuO42010

    • Author(s)
      Yohei Yamauchi, Fumihiko Nakamura, Mariko Sakaki, Tetsuo Takemoto, Takashi Suzuki, Patricia L Alireza, and Yoshiteru Maeno
    • Journal Title

      Physica C

      Volume: 470

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Evidence of superconductivity on the border of quasi-2D ferromagnetism in Ca2RuO4at high pressure, Patricia Lebre Alireza2010

    • Author(s)
      Fumihiko Nakamura, Swee Kuan Goh, Yoshiteru Maeno, Satoru Nakatsuji, Yuen Ting Chris Ko, MichaelSutherland, Stephen Julian and Gilbert George Lonzarich
    • Journal Title

      Journal of Physics: Condensed Matter

      Volume: 22

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Pressure induced novel-phenomena in Mott insulator Ca2RuO42010

    • Author(s)
      Y.Yamauchi, F.Nakamura, M.Sakaki, T.Takemoto, T.Suzuki, P.Alireza, Y.Maeno
    • Journal Title

      Physica C

      Volume: 470 Pages: 740-741

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Presentation] Ca2RuO4の電場誘起モット転移と電流で維持された金属状態2013

    • Author(s)
      山中悠也,中村文彦
    • Organizer
      日本物理学会 第68回年次大会
    • Place of Presentation
      広島大学(東広島市)
    • Year and Date
      2013-03-29
    • Related Report
      2012 Final Research Report
  • [Presentation] モット絶縁体Ca2RuO4の金属化はなぜ起こるのか?2013

    • Author(s)
      中村文彦
    • Organizer
      日本物理学会 第68回年次大会
    • Place of Presentation
      広島大学(東広島市)
    • Year and Date
      2013-03-27
    • Related Report
      2012 Final Research Report
  • [Presentation] モット絶縁体Ca2RuO4への面内一軸性圧力効果2013

    • Author(s)
      谷口晴香,中村文彦
    • Organizer
      日本物理学会 第68回年次大会
    • Place of Presentation
      広島大学(東広島市)
    • Year and Date
      2013-03-27
    • Related Report
      2012 Final Research Report
  • [Presentation] 一軸性圧力によるSr2RuO4とCa2RuO4の基底状態の変化2012

    • Author(s)
      谷口晴香,中村文彦
    • Organizer
      日本物理学会67回年次大会
    • Place of Presentation
      関西学院大学(神戸市)
    • Year and Date
      2012-03-27
    • Related Report
      2012 Final Research Report 2011 Annual Research Report
  • [Presentation] モット絶縁体Ca2RuO4の電場誘起金属現象はなぜ起こるのか?2012

    • Author(s)
      中村文彦
    • Organizer
      日本物理学会67回年次大会
    • Place of Presentation
      関西学院大学(神戸市)
    • Year and Date
      2012-03-25
    • Related Report
      2012 Final Research Report 2011 Annual Research Report
  • [Presentation] モット絶縁体Ca2RuO4の電場誘起金属化2011

    • Author(s)
      中村文彦
    • Organizer
      日本物理学会2011年秋季大会
    • Place of Presentation
      富山大学(富山市)
    • Year and Date
      2011-09-22
    • Related Report
      2012 Final Research Report 2011 Annual Research Report
  • [Presentation] パルス電場によるモット絶縁体Ca2RuO4 の金属化2010

    • Author(s)
      木村有作,中村文彦
    • Organizer
      日本物理学会2010年秋季大会
    • Place of Presentation
      大阪府立大(堺市)
    • Year and Date
      2010-09-24
    • Related Report
      2012 Final Research Report
  • [Presentation] 軟X線分光から見たMott絶縁体Ca2RuO4の電場誘起相転移2010

    • Author(s)
      坂木麻里子,中村文彦
    • Organizer
      日本物理学会2010年秋季大会
    • Place of Presentation
      大阪府立大(堺市)
    • Year and Date
      2010-09-24
    • Related Report
      2012 Final Research Report
  • [Presentation] パルス電場によるモット絶縁体Ca_2RuO_4の金属化2010

    • Author(s)
      木村有作, 山内洋平, 坂木麻里子, 中村文彦
    • Organizer
      日本物理学会2010年秋季大会
    • Place of Presentation
      大阪府堺市
    • Year and Date
      2010-09-24
    • Related Report
      2010 Annual Research Report
  • [Presentation] 軟X線分光から見たMott絶縁体Ca2RuO4の電場誘起相転移2010

    • Author(s)
      坂木麻里子, 中島伸夫, 渡辺剛基, 磯濱陽一, 木村有作, 鈴木孝至, 中村文彦
    • Organizer
      日本物理学会2010年秋季大会
    • Place of Presentation
      大阪府堺市
    • Year and Date
      2010-09-02
    • Related Report
      2010 Annual Research Report
  • [Presentation] モット絶縁体Ca2RuO4の金属化はなぜ起こるのか?

    • Author(s)
      中村文彦,山中悠也,田丸昇,鈴木孝至,前野悦輝 (中村文彦)
    • Organizer
      日本物理学会 第68回年次大会
    • Place of Presentation
      広島大学
    • Related Report
      2012 Annual Research Report
  • [Presentation] Ca2RuO4の電場誘起モット転移と電流で維持された金属状態

    • Author(s)
      山中悠也,田丸昇,鈴木孝至,中村文彦,前野悦輝
    • Organizer
      日本物理学会 第68回年次大会
    • Place of Presentation
      広島大学
    • Related Report
      2012 Annual Research Report
  • [Presentation] モット絶縁体Ca2RuO4への面内一軸性圧力効果

    • Author(s)
      谷口晴香,西村佳悟,中村壮智,Swee K. Goh,米澤進吾,中村文彦,前野悦輝
    • Organizer
      日本物理学会 第68回年次大会
    • Place of Presentation
      広島大学
    • Related Report
      2012 Annual Research Report

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Published: 2010-08-23   Modified: 2020-05-15  

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