Pressure Studies near Quantum Phase Transitions in Strongly Correlated Ce Systems

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Non-Fermi-liquid (NFL) effects in the temperature dependences of both the resistivity and specific heat have been investigated at hydrostatic tatic static pressures p≤1. 7GPa and magnetic fields B≤8T for "A-type" CeCu<SUB>2</SUB>Si<SUB>2</SUB>, some of its disordered derivatives and its homologue CeNi2Ge2. In dilute (La, Ce) Cu<SUB>2. 2. </SUB>Si<SUB>2</SUB>, the NFL phenomena hint at a quantum critical point of spin-glass type. In CeCu<SUB>2</SUB>Si<SUB>2</SUB>, NFL effects show up at the breakdown of phase A. However, the data cannot be explained consistently by the properties of a "nearly antiferromagnetic Fermi liquid". The origin of the NFL effects in CeNi<SUB>2</SUB>Ge<SUB>2</SUB> is yet unclear. For this compound, a novel phase transition at T<SUB>1</SUB>=0. 9 K (p=1. 7GPa) and an incipient superconducting transition below T=0. 1 K (p=0) in a very clean sample are discovered.

収録刊行物

  • 高圧力の科学と技術 = The Review of high pressure science and technology  

    高圧力の科学と技術 = The Review of high pressure science and technology 7, 431-436, 1998 

    The Japan Society of High Pressure Science and Technology

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各種コード

  • NII論文ID(NAID)
    10002690427
  • NII書誌ID(NCID)
    AN10452913
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    0917639X
  • NDL 記事登録ID
    4493945
  • NDL 雑誌分類
    ZP1(科学技術--化学・化学工業)
  • NDL 請求記号
    Z17-1589
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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