COULOMB ENERGY OF A QUASI-2D ELECTRON-GAS IN A QUANTUM-WELL

被引：10

作者：

BETBEDERMATIBET, O

COMBESCOT, M

TANGUY, C

机构：

[1] UNIV PARIS 06,F-75251 PARIS 05,FRANCE

[2] CTR NATL ETUD TELECOMMUN PARIS B,LAB BAGNEUX,FRANCE TELECOM,F-92225 BAGNEUX,FRANCE

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 72卷 / 26期

关键词：

D O I：

10.1103/PhysRevLett.72.4125

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We calculate the Hartree, exchange and correlation energies of a quasi-2D electron gas in doped semiconductor quantum wells, using an expansion in Coulomb interaction. This expansion, also valid for the Hartree term in usual experimental situations, allows one to obtain the analytical well width dependence of the energies. We find that the finite width corrections to the exact 2D exchange-correlation energy are quite often as large as the Hartree contributions.

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页码：4125 / 4128

页数：4

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