Effects of orbital correlation on Drude weight in ferromagnetic metallic phase of La1-xSrxMnO3

被引：7

作者：

Maebashi, H ^{[1
]}

Miyake, K ^{[1
]}

机构：

[1] Osaka Univ, Grad Sch Engn Sci, Dept Phys Sci, Toyonaka, Osaka 5608531, Japan

来源：

PHYSICA B | 2000年 / 281卷 / 281期

基金：

日本学术振兴会;

关键词：

La1-xSrxMnO3; Drude weight; orbital fluctuations; single-particle spectral weight;

D O I：

10.1016/S0921-4526(99)00948-5

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

It is argued that a large discrepancy between the Drude weight and the specific heat coefficient observed in ferromagnetic metallic phase of La1-xSrxMnO3 can be understood as a result of a Fermi-liquid correction F-1(s) due to backward scattering of quasi-particles mediated by antiferro-orbital fluctuations, The Ward identity requires that the single-particle spectral weight at the Fermi level vanishes when F-1(s) --> 3. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：526 / 527

页数：2

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