Pressure-Induced Non Fermi Liquid Behavior near a Magnetic Instability

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Electrical resistivity of CePtSi<SUB>2</SUB> (T<SUB>N</SUB>=1. 7 K), CePtGa (T<SUB>N</SUB>=3. 5 K) and Y<SUB>1-x</SUB> U<SUB>x</SUB>Pd<SUB>3</SUB> (x=0. 198) have been measured at high pressure. It is found that the antiferromagnetic ordering of the two Ce compounds is suppressed by pressure, i. e., Néel temperature T<SUB>N</SUB> becomes zero at a critical pressure P<SUB>c</SUB> to show a non fermi liquid behavior above P<SUB>c</SUB>. By pressurizing more above P<SUB>c</SUB>, the electronic states show a crossover from non Fermi liquid (NFL) to Fermi liquid (FL) states or Kondo state. On the other hand for U-compound which shows NFL properties at ambient pressure a crossover from NFL to FL is also observed by applying pressure. These facts indicate that the NFL state becomes unstable at high pressure. The electronic states of these compounds show a general trends of magnetic ordering → NFL → FL as pressure increases.

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, 382-387, 1998

    The Japan Society of High Pressure Science and Technology

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各種コード

  • NII論文ID(NAID)
    10002690226
  • 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
    4493936
  • 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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