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
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
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.
Received: 09 May 2004
Revised: 20 August 2004
Accepted manuscript online:
PACS:
71.27.+a
(Strongly correlated electron systems; heavy fermions)
Jiang Li-Xia (姜黎霞), Meng Ji-Bao (孟继宝), Xia Zhao-Yang (夏兆阳), Chen Zhao-Jia (陈兆甲), Luo Jian-Lin (雒建林), Wang Nan-Lin (王楠林) Low-temperature specific heat and resistance for the heavy-electron metals CeCu6-xMx (M=Ni,Zn) 2004 Chinese Physics 13 2130
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