Dynamical exchange corrections to the dielectric function in a two-dimensional electron gas

被引：2
|
作者：
Hameeuw, KJ [1 ]
Brosens, F [1 ]
Devreese, JT [1 ]
机构：
[1] UIA, Dept Natuurkunde, B-2610 Antwerp, Belgium
来源：
SOLID STATE COMMUNICATIONS | 2003年 / 125卷 / 09期
关键词：
electron interactions; dielectric response;
D O I：
10.1016/S0038-1098(02)00886-4
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The effect of dynamical exchange interactions on the dielectric function of a two-dimensional electron gas is studied using a variational approach. Exchange effects are introduced via the local-field correction. The variationally obtained local-field factor is compared to the earlier perturbative result to first order in the electron-electron interaction. (C) 2003 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：481 / 484
页数：4
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