Enhancement of mass anisotropy in an electron-phonon coupled model close to a Van Hove singularity

被引：1

作者：

Caprara, S

DelPrete, V

机构：

[1] Dipartimento di Fisica, Univ. degli Studi di Roma, 00185 Roma, P le Aldo Moro

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1997年 / 9卷 / 46期

关键词：

D O I：

10.1088/0953-8984/9/46/017

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We investigate the effect of electronic mass renormalization due to the coupling of electrons to an Einstein phonon in the presence of a Van Hove singularity in the density of states, resulting from a saddle point in the bare electronic spectrum. We Show that an enhancement of mass anisotropy is produced in a wide region of parameters of our model.

引用

页码：10195 / 10202

页数：8

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