EXCHANGE AND CORRELATION-EFFECTS IN A SEMICONDUCTOR QUANTUM-WELL WIRE

被引：25

作者：

CAMPOS, VB ^{[1
]}

DEGANI, MH ^{[1
]}

HIPOLITO, O ^{[1
]}

机构：

[1] UNIV SAO PAULO, INST FIS, BR-13560250 SAO CARLOS, SP, BRAZIL

来源：

SUPERLATTICES AND MICROSTRUCTURES | 1995年 / 17卷 / 01期

关键词：

D O I：

10.1006/spmi.1995.1018

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The exchange and correlation effects of a quasi-one-dimensional electron gas are investigated hy using the self-consistent-field approximation theory proposed by Singwi, Tosi, Land and Sjolander for the response function of the electron system. The present results are applied to GaAs-GaAlAs rectangular quantum-well-wires with the appropriate form factors that take into account the influence of the finite width of the electron layer. The plasmon dispersion relation and structure factor are calculated as a function of electron density and thickness of the wire. Results for the total energy per electron including kinetic, exchange and correlation energies and electron effective mass are presented. The Hartree-Fock and the random-phase approximation (RPA) results are also presented for comparison. We have found that exchange and correlation effects are more evident in wires of reduced dimensions.

引用

页码：85 / 90

页数：6

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