Specific Heat Study of Non-Fermi Liquid Behavior in CeNi<sub><b>2</b></sub>Ge<sub><b>2</b></sub>: Anomalous Peak in Quasi-Particle Density-of-States

DOI DOI Web Site Web Site BIBCODE 被引用文献2件 参考文献25件 オープンアクセス
  • Aoki Yuji
    Department of Physics, Faculty of Science, Tokyo Metropolitan University, Minami–Ohsawa 1–1, Hachioji, Tokyo 192–03
  • Urakawa Jun
    Department of Physics, Faculty of Science, Tokyo Metropolitan University, Minami–Ohsawa 1–1, Hachioji, Tokyo 192–03
  • Sugawara Hitoshi
    Department of Physics, Faculty of Science, Tokyo Metropolitan University, Minami–Ohsawa 1–1, Hachioji, Tokyo 192–03
  • Sato Hideyuki
    Department of Physics, Faculty of Science, Tokyo Metropolitan University, Minami–Ohsawa 1–1, Hachioji, Tokyo 192–03
  • Fukuhara Tadashi
    Faculty of Engineering, Toyama Prefectural University, Kosugi, Toyama 939–03
  • Maezawa Kunihiko
    Faculty of Engineering, Toyama Prefectural University, Kosugi, Toyama 939–03

書誌事項

タイトル別名
  • Specific Heat Study of Non-Fermi Liquid Behavior in CeNi2Ge2: Anomalous Peak in Quasi-Particle Density-of-States.
  • Specific Heat Study of Non-Fermi Liquid

この論文をさがす

説明

To investigate the non-Fermi liquid (NFL) behavior in a nonalloyed system CeNi2Ge2, we have measured the temperature and field dependences of the specific heat C on a CeNi2Ge2 single crystal. The distinctive temperature dependence of C/T (--α-β√T) is destroyed in almost the same manner for both field directions of B//c-axis and B//a-axis. The overall behavior of C(T,B) and the low-temperature upturn in χ(T) can be reproduced, assuming an anomalous peak of the quasi-particle-band density-of-states (DOS) at the Fermi energy possessing √ε energy dependence. Absence of residual entropy around T=0 K in B -- 0 T has been confirmed by the magnetocaloric effect measurements, which are consistent with the present model. The present model can also be applied to the NFL behavior in CeCu5.9Au0.1 using a ln(ε)-dependent peak in the DOS. Possible origins of the peak in the DOS are discussed.

収録刊行物

被引用文献 (2)*注記

もっと見る

参考文献 (25)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ