Trion and exciton dephasing measurements in modulation-doped quantum wells:: A probe for trion and carrier localization

被引：57

作者：

Brinkmann, D

Kudrna, J

Gilliot, P

Hönerlage, B

Arnoult, A

Cibert, J

Tatarenko, S

机构：

[1] Inst Phys & Chim Mat Strasbourg, Grp Opt Nonlineaire & Optoelect, Unite Mixte CNRS ULP UMR 7504, F-67037 Strasbourg, France

[2] Univ Grenoble 1, Spectrometrie Phys Lab, Unite Mixte CNRS UMR 5588, F-38402 St Martin Dheres, France

来源：

PHYSICAL REVIEW B | 1999年 / 60卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.60.4474

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

To investigate the properties of a two-dimensional carrier gas at intermediate densities, we perform picosecond transient four-wave mixing experiments on trions (charged excitons) and neutral excitons in modulation p-doped CdTe/Cd1-x-yMgxZnyTe quantum wells. The determination of trion and exciton dephasing rates reveals a localization of both trions and holes in potential fluctuations induced by the ionized remote accepters. We demonstrate that trions can be efficiently used as a charged optical probe sensitive to electrostatic potential fluctuations which are imperceptible for neutral excitons. [S0163-1829(99)15731-X].

引用

页码：4474 / 4477

页数：4

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