Origin of the inner ring in photoluminescence patterns of quantum well excitons

被引：66

作者：

Ivanov, AL ^{[1
]}

Smallwood, LE

Hammack, AT

Yang, S

Butov, LV

Gossard, AC

机构：

[1] Univ Cardiff Wales, Dept Phys & Astron, Cardiff CF24 3YB, Wales

[2] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA

[3] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA

来源：

EUROPHYSICS LETTERS | 2006年 / 73卷 / 06期

关键词：

D O I：

10.1209/epl/i2006-10002-4

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In order to explain and model the inner ring in photoluminescence (PL) patterns of indirect excitons in GaAs/AlGaAs quantum wells (QWs), we develop a microscopic approach formulated in terms of coupled nonlinear equations for the diffusion, thermalization and optical decay of the particles. The origin of the inner ring is unambiguously identified: it is due to cooling of indirect excitons in their propagation from the excitation spot.

引用

页码：920 / 926

页数：7

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