Mobile excitons and Fermi edge singularities in an interacting 2D electron gas

被引：3

作者：

Brum, JA

Brown, S

Hawrylak, P

Young, JF

Wasilewski, Z

机构：

[1] UNICAMP, INST FIS, DFESCM, BR-13081970 CAMPINAS, SP, BRAZIL

[2] UNIV BRITISH COLUMBIA, DEPT PHYS, VANCOUVER, BC V5Z 1M9, CANADA

[3] UNIV NEW S WALES, SCH PHYS, KENSINGTON, NSW 2033, AUSTRALIA

来源：

SURFACE SCIENCE | 1996年 / 361卷 / 1-3期

关键词：

electron density; excitation spectra calculations; gallium arsenide; many-body and quasi-particle theories; quantum effects; quantum wells; semiconductor-semiconductor heterostructures;

D O I：

10.1016/0039-6028(96)00436-0

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We present theoretical and experimental results on the evolution of the threshold absorption of a 2D electron gas as a function of electron density. We pay particular attention to the low density regime where the spectrum evolves from an exciton to a Fermi edge singularity, The many-body origin of the Moss-Burstein shift is emphasized.

引用

页码：424 / 427

页数：4

共 5 条

[1] MANY-BODY EFFECTS IN A MODULATION-DOPED SEMICONDUCTOR QUANTUM-WELL [J].