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Correlation physical property, charge-density-wave and superconductivity in Rare-earth compound crystals which has no inversion symmetry.

Research Project

Project/Area Number 24540374
Research Category

Grant-in-Aid for Scientific Research (C)

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

Principal Investigator

NOGAMI Yoshio  岡山大学, 自然科学研究科, 教授 (10202251)

Co-Investigator(Renkei-kenkyūsha) KONDO Ryusuke  岡山大学, 大学院自然科学研究科, 准教授 (60302824)
Project Period (FY) 2012-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords電荷密度波 / 4f電子 / 希土類元素 / 磁場 / 磁気秩序 / 4f電子 / 単結晶育成 / 磁場下物性
Outline of Final Research Achievements

It was known that SmNiC2 whose crystal structure has no inversion symmetry shows Charge-Density-Wave(CDW) breaking with cooling at Curie Temperature. Interested in this phenomenon, we made single crystals with good quality for many kinds of RNiC2 (R=La, Ce, Pr, Nd, Sm, Gd, Dy, Y, Ho, Er), and measured physical and structural properties. We found two kinds of modulated structures whose wave vector are incommensurate ( 0.5 0.52, 0) and commensurate (0.5 0.5 0.5). Both superstructure were stabilized by lattice parameter shrinkage i. e, the formation temperature of CDW increases with the atomic number. Between Pr and Gd, there is only incommensurate superstructure with resistivity upturn(CDW) and the CDW was destroyed by the external field for at least R=Nd, Sm, Gd. For Dy and Y the competition among two superstructure was observed around room temperature. R=Ho and Er compounds show only the commensurate superlattice above room temperature.

Report

(4 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • 2012 Research-status Report
  • Research Products

    (11 results)

All 2015 2014 2013 2012

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (7 results) Book (1 results)

  • [Journal Article] Interplay of Charge-Density Wave and Magnetic Order in Ternary Rare-Earth Nickel Carbides, RNiC2 (R=Pr and Nd)2013

    • Author(s)
      Nobuki Yamamoto, Ryusuke Kondo, Hiroyuki Maeda, Yoshio Nogami
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: Volume 82, Issue 12 Issue: 12 Pages: 123701-123701

    • DOI

      10.7566/jpsj.82.123701

    • NAID

      210000132851

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] X-ray crystal structure analysis and the Ru valence of Ba4Ru3O10 single crystals2013

    • Author(s)
      T. Igarashi, Y. Nogami, Y. Klein, G. Rousse, R. Okazaki, H. Taniguchi, Y. Yasui and I. Terasaki
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 82 Issue: 10 Pages: 104603-104603

    • DOI

      10.7566/jpsj.82.104603

    • NAID

      210000132784

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Magnetic field switching of the charge-density-wave state in the lanthanide intermetallic SmNiC_22012

    • Author(s)
      N. Hanasaki, Y. Nogami, 他4名
    • Journal Title

      Phys. Rev. B

      Volume: vol.85 Issue: 9 Pages: 1-5

    • DOI

      10.1103/physrevb.85.092402

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Presentation] 希土類化合物RNiC2(R=La,Ce)のホール効果22015

    • Author(s)
      野村勝史,近藤隆祐,野上由夫
    • Organizer
      日本物理学会第70回年次大会
    • Place of Presentation
      早稲田大学早稲田キャンパス
    • Year and Date
      2015-03-21 – 2015-03-24
    • Related Report
      2014 Annual Research Report
  • [Presentation] Magnetic-Field-Induced Suppression of Charge Order in Phthalocyanine- Molecular Conductor2014

    • Author(s)
      N. Hanasaki, A. Kanda, M. Ikeda, H. Murakawa, M. Matsuda, Y.Nogami, H. Tajima, and T. Inabe
    • Organizer
      5th International Meeting on Spin in Organic Semiconductors
    • Place of Presentation
      Himeji Cultural and International Exchange Foundation
    • Year and Date
      2014-10-13 – 2014-10-17
    • Related Report
      2014 Annual Research Report
  • [Presentation] 希土類化合物RNiC2(R=Sm,Nd)のホール効果2014

    • Author(s)
      野村勝史,近藤隆祐,野上由夫
    • Organizer
      日本物理学会秋季大会
    • Place of Presentation
      中部大学春日井キャンパス
    • Year and Date
      2014-09-07 – 2014-09-10
    • Related Report
      2014 Annual Research Report
  • [Presentation] 希土類化合物RTC2(R=Y,Dy;T=Ni,Co)における磁気秩序とCDWの相互作用2013

    • Author(s)
      前田浩之,近藤隆祐,野上由夫
    • Organizer
      日本物理学会
    • Place of Presentation
      徳島大学
    • Related Report
      2013 Research-status Report
  • [Presentation] 希土類化合物RNiC2(R=Y,Ho,Er)の構造相転移2013

    • Author(s)
      近藤隆祐,前田浩之,野村勝史,野上由夫
    • Organizer
      日本物理学会
    • Place of Presentation
      東海大学
    • Related Report
      2013 Research-status Report
  • [Presentation] 希土類化合物RNiC2の単結晶作成と物性測定2013

    • Author(s)
      前田浩之,山本伸樹,近藤隆祐,野上由夫
    • Organizer
      日本物理学会第68回年次大会
    • Place of Presentation
      広島大学
    • Related Report
      2012 Research-status Report
  • [Presentation] TbNiC2のX線磁気散乱2012

    • Author(s)
      下村晋,中尾裕則,山本伸樹,野上由夫,花咲徳亮,小坂昌史,小野寺秀也
    • Organizer
      日本物理学会2012年秋季大会
    • Place of Presentation
      横浜国立大学
    • Related Report
      2012 Research-status Report
  • [Book] 日本の結晶学(II)-その輝かしい発展-2014

    • Author(s)
      三木邦夫編(野上由夫 一部著)
    • Total Pages
      485
    • Publisher
      日本結晶学会
    • Related Report
      2014 Annual Research Report

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Published: 2013-05-31   Modified: 2020-05-15  

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