New Superconducting and Magnetic Phases Emerge on the Magnetic Criticality in CeIn_3

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Author(s)

    • Kawasaki S. KAWASAKI S.
    • Department of Materials Science and Technology, Graduate School of Engineering Science, Osaka University
    • Mito T. MITO T.
    • Department of Materials Science and Technology, Graduate School of Engineering Science, Osaka University
    • KOTEGAWA H.
    • Department of Materials Science and Technology, Graduate School of Engineering Science, Osaka University
    • ZHENG G.-Q.
    • Department of Materials Science and Technology, Graduate School of Engineering Science, Osaka University
    • KITAOKA Y.
    • Department of Materials Science and Technology, Graduate School of Engineering Science, Osaka University
    • SHISHIDO H.
    • Department of Physics, Graduate School of Science, Osaka University
    • ARAKI S.
    • Department of Physics, Graduate School of Science, Osaka University
    • SETTAI R.
    • Advanced Science Research Center, Japan Atomic Energy Research Institute
    • ONUKI Y.
    • Department of Physics, Graduate School of Science, Osaka University

Abstract

We report the discovery of new superconducting and novel magnetic phases in CeIn_3 on the verge of antiferromagnetism (AFM) under pressure (P) through the In-nuclear quadrupole resonance (NQR) measurements. We have found a P-induced phase separation of AFM and paramagnetism (PM) without any trace of a quantum phase transition in CeIn_3. A new type of superconductivity (SC) was found, under P = 2.28-2.5 Gpa, to coexist with AFM. It is magnetically separated from PM where the heavy fermion SC takes place. We propose that the magnetic excitations such as spin-density fluctuations induced by the first-order magnetic phase transition might mediate attractive interaction to form Cooper pairs.

Journal

  • Journal of the Physical Society of Japan

    Journal of the Physical Society of Japan 73(7), 1647-1650, 2004-07-15

    The Physical Society of Japan (JPS)

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Codes

  • NII Article ID (NAID)
    110001954869
  • NII NACSIS-CAT ID (NCID)
    AA00704814
  • Text Lang
    ENG
  • Article Type
    Journal Article
  • ISSN
    00319015
  • NDL Article ID
    7003909
  • NDL Source Classification
    ZM35(科学技術--物理学)
  • NDL Call No.
    Z53-A404
  • Data Source
    CJP  CJPref  NDL  NII-ELS 
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