MANY-BODY EFFECTS IN QUANTUM-WELLS - FINITE-WIDTH EFFECTS

被引：11

作者：

GOLD, A

CALMELS, L

机构：

[1] Laboratoire de Physique des Solides, Université Paul Sabatier, 31062 Toulouse

来源：

SOLID STATE COMMUNICATIONS | 1993年 / 88卷 / 08期

关键词：

D O I：

10.1016/0038-1098(93)90071-T

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The local-field correction of a quantum well with a finite well width is calculated within a sum-rule approach. Quasi-analytical results are obtained for the local-field correction. We calculate the exchange energy, the correlation energy and the compressibility and a systematic study vs the electron density and the well width is performed. We find that the finite width effects increase the inverse compressibility if compared to the ideally two-dimensional electron gas. We compare it with a recent measurement of the compressibility of a quantum well.

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页码：659 / 662

页数：4

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