Electron-Spin Dynamics in Strongly Correlated Metals

被引：11
|
作者：
Dora, Balazs [1 ,2 ,3 ]
Simon, Ferenc [1 ,2 ]
机构：
[1] Budapest Univ Technol & Econ, Inst Phys, H-1521 Budapest, Hungary
[2] Hungarian Acad Sci, Condensed Matter Res Grp, H-1521 Budapest, Hungary
[3] Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany
来源：
PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 13期
关键词：
CONDUCTION; RESONANCE; RESISTIVITY; FULLERIDES; K6C60; K3C60;
D O I：
10.1103/PhysRevLett.102.137001
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The temperature dependence of the electron-spin lifetime T(1) and the g factor are anomalous in alkali fullerides (K,Rb)(3)C(60), which cannot be explained by the canonical Elliott-Yafet theory. These materials are archetypes of strongly correlated and narrow band metals. We introduce the concept of a "complex electron-spin resonance frequency shift" to treat these measurables in a unified manner within the Kubo formalism. The theory is applicable for metals with nearly degenerate conduction bands and large momentum scattering even with an anomalous temperature dependence and sizable residual value.
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页数：4
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