On the thermoelectricity of correlated electrons in the zero-temperature limit

被引:270
作者
Behnia, K
Jaccard, D
Flouquet, J
机构
[1] ESPCI, CNRS, Phys Quant Lab, F-75005 Paris, France
[2] Univ Geneva, Dept Phys Mat Condensee, CH-1211 Geneva, Switzerland
[3] Commissariat Energie Atom, SPSMS, DRFMC, F-38042 Grenoble, France
关键词
D O I
10.1088/0953-8984/16/28/037
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
The Seebeck coefficient of a metal is expected to display a linear temperature dependence in the zero-temperature limit. To attain this regime, it is often necessary to cool the system well below I K. We put under scrutiny the magnitude of this term in different families of strongly interacting electronic systems. For a wide range of compounds (including heavy-fermion, organic and various oxide families) a remarkable correlation between this term and the electronic specific heat is found. We argue that a dimensionless ratio relating these two signatures of mass renormalization contains interesting information about the ground state of each system. The absolute value of this ratio remains close to unity in a wide range of strongly correlated electron systems.
引用
收藏
页码:5187 / 5198
页数:12
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