Photoluminescence discontinuities close to the filling factor v=1

被引：28

作者：

Nicholas, RJ

Kinder, D

Priest, AN

Chang, CC

Cheng, HH

Harris, JJ

Foxon, CT

机构：

[1] Dept Phys, Clarendon Lab, Oxford OX1 3PU, England

[2] Taiwan Natl Univ, Ctr Condensed Matter Sci, Taipei, Taiwan

[3] UCL, Dept Elect Engn, London, England

[4] Univ Nottingham, Dept Phys, Nottingham NG7 2RD, England

来源：

PHYSICA B-CONDENSED MATTER | 1998年 / 249卷

关键词：

photoluminescence; excitons; cyclotron resonance; GaAs/GaAlAs heterostructures;

D O I：

10.1016/S0921-4526(98)00184-7

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We report the measurement of magnetophotoluminescence spectra in high-mobility GaAs/GaAlAs heterojunctions as a function of density and temperature. For densities below 1 x 10(11) cm(-2) the PL is excitonic in nature, but at higher densities a transition occurs at Landau occupancies below v = 1 to a "free-hole" luminescence, accompanied by a red shift of the FL. The transition is strongly temperature dependent. We also describe the observation of a FIR modulation of the PL signal, which is found to modulate only the excitonic PL. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：553 / 557

页数：5

共 11 条

[1] Evidence of Skyrmion excitations about nu=1 in n-modulation-doped single quantum wells by interband optical transmission [J].