Trapping long-lifetime excitons in a two-dimensional harmonic potential

被引：37

作者：

Snoke, DW

Liu, Y

Vörös, Z

Pfeiffer, L

West, K

机构：

[1] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA

[2] Lucent Technol, Bell Labs, Murray Hill, NJ 07974 USA

来源：

SOLID STATE COMMUNICATIONS | 2005年 / 134卷 / 1-2期

关键词：

GaAs; coupled quantum wells; excitons; Bose-Einstein condensation; interacting Bose gas;

D O I：

10.1016/j.ssc.2004.11.053

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We report an important step forward for the goal of unambiguous observation of Bose-Einstein condensation of excitons in semiconductors. We have demonstrated a system in which excitons live for microseconds, much longer than their thermalization time, move over distances of hundreds of microns, and can be trapped in a harmonic potential exactly analogous to the traps for atomic condensates. We also report recent results of a new method for observing evidence of Bose-Einstein condensation, by angular resolution of the emitted luminescence. (c) 2004 Elsevier Ltd. All rights reserved.

引用

页码：37 / 42

页数：6

共 34 条

[1] ELECTRIC-FIELD EFFECTS ON EXCITON LIFETIMES IN SYMMETRICAL COUPLED GAAS-AL0.3GA0.7AS DOUBLE QUANTUM-WELLS [J].

ALEXANDROU, A ;

KASH, JA ;

MENDEZ, EE ;

ZACHAU, M ;

HONG, JM ;

FUKUZAWA, T ;

HASE, Y .

PHYSICAL REVIEW B, 1990, 42 (14) :9225-9228

[2] STARK-EFFECT IN STRONGLY COUPLED QUANTUM WELLS [J].

ANDREWS, SR ;

MURRAY, CM ;

DAVIES, RA ;

KERR, TM .

PHYSICAL REVIEW B, 1988, 37 (14) :8198-8204

[3]

Bastard G., 1988, WAVE MECH APPL SEMIC

[4] BOSE-EINSTEIN CONDENSATION OF EXCITONS [J].

BLATT, JM ;

BRANDT, W ;

BOER, KW .

PHYSICAL REVIEW, 1962, 126 (05) :1691-&

[5] Macroscopically ordered state in an exciton system [J].

Butov, LV ;

Gossard, AC ;

Chemla, DS .

NATURE, 2002, 418 (6899) :751-754

[6] Stimulated scattering of indirect excitons in coupled quantum wells: Signature of a degenerate Bose-gas of excitons [J].

Butov, LV ;

Ivanov, AL ;

Imamoglu, A ;

Littlewood, PB ;

Shashkin, AA ;

Dolgopolov, VT ;

Campman, KL ;

Gossard, AC .

PHYSICAL REVIEW LETTERS, 2001, 86 (24) :5608-5611

[7] EVIDENCE FOR BOSE-EINSTEIN CONDENSATION OF BIEXCITONS IN CUCL [J].

CHASE, LL ;

PEYGHAMBARIAN, N ;

GRYNBERG, G ;

MYSYROWICZ, A .

PHYSICAL REVIEW LETTERS, 1979, 42 (18) :1231-1234

[8] EXCITON BOSE CONDENSATION - THE GROUND-STATE OF AN ELECTRON-HOLE GAS .1. MEAN FIELD DESCRIPTION OF A SIMPLIFIED MODEL [J].

COMTE, C ;

NOZIERES, P .

JOURNAL DE PHYSIQUE, 1982, 43 (07) :1069-1081

[9]

DAFLOVO F, 1999, REV MOD PHYS, V71, P463, DOI DOI 10.1103/REVMODPHYS.71.463

[10] Stress dependence of exciton relaxation processes in Cu2O -: art. no. 085211 [J].

Denev, S ;

Snoke, DW .

PHYSICAL REVIEW B, 2002, 65 (08) :1-8

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