中国物理B ›› 2004, Vol. 13 ›› Issue (12): 2130-2135.doi: 10.1088/1009-1963/13/12/027

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Low-temperature specific heat and resistance for the heavy-electron metals CeCu6-xMx (M=Ni,Zn)

姜黎霞1, 夏兆阳1, 孟继宝2, 陈兆甲2, 雒建林2, 王楠林2   

  1. (1)Department of Basic Science, Beijing Union University, Beijing 100101, China; (2)Institute of Physics, Key Laboratory of Extreme Conditions Physics, Chinese Academy of Sciences, Beijing 100080, China
  • 收稿日期:2004-05-09 修回日期:2004-08-20 出版日期:2004-12-17 发布日期:2005-03-17

Low-temperature specific heat and resistance for the heavy-electron metals CeCu6-xMx (M=Ni,Zn)

Jiang Li-Xia (姜黎霞)a, Meng Ji-Bao (孟继宝)b, Xia Zhao-Yang (夏兆阳)a, Chen Zhao-Jia (陈兆甲)b, Luo Jian-Lin (雒建林)b, Wang Nan-Lin (王楠林)b   

  1. a Department of Basic Science, Beijing Union University, Beijing 100101, China; b Institute of Physics, Key Laboratory of Extreme Conditions Physics, Chinese Academy of Sciences, Beijing 100080, China
  • Received:2004-05-09 Revised:2004-08-20 Online:2004-12-17 Published:2005-03-17

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摘要： The specific heat and resistance of CeCu_{6-x}M_x (M=Ni,Zn) have been studied in the concentration range where they still retain the orthorhombic structure. The coefficient c of -ln T term in resistance R=R_0+bT-cln T, as well as the γ, have been found to vary in opposite directions with increasing x for Ni and Zn substitutions. The physical mechanism is discussed.

关键词: heavy fermion system, low-temperature specific heat, low-temperature resistance

Abstract: The specific heat and resistance of CeCu$_{6-x}$M$_x$ ($M$=Ni,Zn) have been studied in the concentration range where they still retain the orthorhombic structure. The coefficient c of -ln T term in resistance $R=R_0+bT-c\ln T$, as well as the $\gamma$, have been found to vary in opposite directions with increasing $x$ for Ni and Zn substitutions. The physical mechanism is discussed.

Key words: heavy fermion system, low-temperature specific heat, low-temperature resistance

中图分类号:  (Strongly correlated electron systems; heavy fermions)

  • 71.27.+a
65.40.Ba (Heat capacity) 72.15.Qm (Scattering mechanisms and Kondo effect)