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Many-body effects in carrier capture and energy relaxation in self-organized InAs/GaAs quantum dots

被引：28
作者：
Yuan, ZL
Foo, ERAD
Ryan, JF
Mowbray, DJ
Skolnick, MS
Hopkinson, M
机构：
[1] Univ Oxford, Clarendon Lab, Oxford OX1 3PU, England
[2] Univ Sheffield, Dept Phys, Sheffield S3 7RH, S Yorkshire, England
[3] Univ Sheffield, Dept Elect & Elect Engn, Sheffield S1 3JD, S Yorkshire, England
来源：
PHYSICA B | 1999年 / 272卷 / 1-4期
关键词：
quantum dots; time-resolved photoluminescence; relaxation; many-body effects;
D O I：
10.1016/S0921-4526(99)00234-3
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We have measured carrier dynamics in self-organized InAs/GaAs quantum dots using femtosecond time-resolved photoluminescence. The observation of intensity building up sequentially from the lower states is attributed to fast trapping and intra-dot relaxation; the dependence of population risetimes on carrier density indicates that relaxation is governed by carrier-carrier scattering. Strong many-body effects are also observed at high excitation densities. (C) 1999 Elsevier Science B.V. All rights reserved.
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页码：12 / 14
页数：3
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