Unconventional Superconductivity in CeCoIn<sub>5</sub> Studied by the Specific Heat and Magnetization Measurements

DOI DOI Web Site Web Site Web Site ほか1件をすべて表示 一部だけ表示 被引用文献47件 参考文献38件
  • Ikeda Shugo
    Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043
  • Shishido Hiroaki
    Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043
  • Nakashima Miho
    Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043
  • Settai Rikio
    Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043
  • Aoki Dai
    Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043
  • Haga Yoshinori
    Advanced Science Research Center, Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195
  • Harima Hisatomo
    The Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka 567-0047
  • Aoki Yuji
    Graduate School of Tokyo Metropolitan University, Minami-Ohsawa 1-1, Hachioji, Tokyo 192-0309
  • Namiki Takahiro
    Graduate School of Tokyo Metropolitan University, Minami-Ohsawa 1-1, Hachioji, Tokyo 192-0309
  • Sato Hideyuki
    Graduate School of Tokyo Metropolitan University, Minami-Ohsawa 1-1, Hachioji, Tokyo 192-0309
  • Onuki Yoshichika
    Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043 Advanced Science Research Center, Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195

書誌事項

タイトル別名
  • Unconventional Superconductivity in CeCoIn5 Studied by the Specific Heat and Magnetization Measurements.

この論文をさがす

説明

We measured the low-temperature specific heat in magnetic fields up to 80 kOe, together with the magnetization for the heavy-fermion superconductor CeCoIn5 with the transition temperature Tc = 2.25 K. CeCoIn5 is a strong-coupling superconductor with a large jump in the specific heat Δ C/Cn (Tc) = 4.7. The heavy-fermion state is significantly formed below 1 K, reaching at least 1070 mJ/K2·mol in magnetic fields. This large electronic specific heat coefficient at 0.25 K is, however, reduced with increasing magnetic field, ranging from 1070 mJ/K2·mol at 50 kOe to 820 mJ/K2·mol at 80 kOe. The upper critical field Hc2 at 0 K is estimated to be 116 kOe for H || [100] and 49.5 kOe for H || [001]. The present anisotropy of Hc2 is well explained by the anisotropic effective mass, but the magnitude of Hc2 is reduced strongly by the paramagnetic effect for both field directions.

収録刊行物

被引用文献 (47)*注記

もっと見る

参考文献 (38)*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