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
收藏
页码：10195 / 10202
页数：8
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