Non-generality of the Kadowaki-Woods ratio in correlated oxides

被引：68

作者：

Hussey, NE ^{[1
]}

机构：

[1] Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2005年 / 74卷 / 04期

基金：

英国工程与自然科学研究理事会;

关键词：

Kadowaki-Woods ratio; strongly correlated electrons; resistivity; specific heat;

D O I：

10.1143/JPSJ.74.1107

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

An explicit expression for the Kadowaki-Woods ratio in correlated metals is derived by invoking saturation of the (high-frequency) Fermi-liquid scattering rate at the Mott-Ioffe-Regel limit. Significant deviations observed in a number of oxides are quantitatively explained due to variations in carrier density, dimensionality, unit cell volume and the number of individual sheets in the Brillouin zone. A generic re-scaling of the original Kadowaki-Woods plot is also presented.

引用

页码：1107 / 1110

页数：4

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