Phonon anomalies due to strong-electronic correlations in layered organic metals

被引：31

作者：

Merino, J ^{[1
]}

McKenzie, RH ^{[1
]}

机构：

[1] Univ New S Wales, Sch Phys, Sydney, NSW 2052, Australia

来源：

PHYSICAL REVIEW B | 2000年 / 62卷 / 24期

关键词：

D O I：

10.1103/PhysRevB.62.16442

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We show how the coupling between the phonons and electrons in a strongly correlated metal can result in phonon frequencies that have a nonmonotonic temperature dependence. Dynamical mean-field theory is used to study the Hubbard-Holstein model that describes the kappa-(BEDT-TTF)(2)X [where BEDT-TTF is bis-(ethylenedithia-tetrathiafulvalene)] family of superconducting molecular crystals. The crossover with increasing temperature from a Fermi liquid to a bad metal produces phonon anomalies that are relevant to recent Raman scattering and acoustic experiments.

引用

页码：16442 / 16445

页数：4

共 21 条

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