On the thermoelectricity of correlated electrons in the zero-temperature limit
On the thermoelectricity of correlated electrons in the zero-temperature limit
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DOI：
10.1088/0953-8984/16/28/037
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发表时间：
2004-07-21
影响因子：
2.7
通讯作者：
Flouquet, J
中科院分区：
文献类型：
--
作者：
Behnia, K;Jaccard, D;Flouquet, J
金属的塞贝克系数在零温极限下呈现线性温度依赖关系。为了达到这种状态，通常需要将系统冷却到远低于1K。我们仔细研究了这个词在不同的家庭的强相互作用的电子系统的大小。对于范围广泛的化合物（包括重费米子，有机和各种氧化物的家庭）之间的显着相关性，这一项和电子的比热found.We认为，无量纲比这两个签名的质量重整化包含有趣的信息，每个系统的基态。这个比率的绝对值在大范围的强关联电子系统中保持接近于1。
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.