Photoluminescence in the fractional quantum Hall regime

被引：3

作者：

Yusa, G ^{[1
]}

Shtrikman, H ^{[1
]}

Bar-Joseph, I ^{[1
]}

机构：

[1] Weizmann Inst Sci, Dept Condensed Matter Phys, IL-76100 Rehovot, Israel

来源：

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2002年 / 12卷 / 1-4期

关键词：

fractional quantum Hall effect; phototuminescence; charged-exciton;

D O I：

10.1016/S1386-9477(01)00259-4

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We study the photoluminescence spectrum of a low density (v < 1) two-dimensional electron gas at high magnetic fields and low temperatures. We find that the spectrum in the fractional quantum Hall regime can be understood in terms of singlet and triplet charged-excitons. We identify the dark triplet charged-exciton and show that it is visible in the spectrum at T < 2 K. We find that its binding energy scales like e(2)/l, where l is the magnetic length. and it crossed, the singlet slightly above 15 T. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：49 / 54

页数：6

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