Magneto-optical spectroscopy of modulation-doped GaAs AlGaAs asymmetric coupled double quantum wells

被引：3
|
作者：
Lee, JI [1 ]
Viswanath, AK
Yu, S
Shin, EJ
Lee, KS
Lee, HG
Ihm, G
机构：
[1] Korea Res Inst Standards & Technol, Spect Lab, Taejon 305600, South Korea
[2] Elect & Telecommun Res Inst, Res Dept, Taejon 305600, South Korea
[3] Chungbuk Natl Univ, Sch Elect & Elect Engn, Cheongju 360736, South Korea
[4] Chungnam Natl Univ, Dept Phys, Taejon 305764, South Korea
来源：
SOLID STATE COMMUNICATIONS | 1999年 / 110卷 / 11期
关键词：
quantum wells; semiconductors; optical properties; luminescence;
D O I：
10.1016/S0038-1098(99)00126-X
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We have presented the magneto-optical studies of modulation-doped GaAs/AlGaAs asymmetric coupled double quantum wells. The transition energies of two asymmetric quantum wells are in good agreement with those obtained from a self-consistent calculation. The effective mass of the first subband electron is found to be larger than that of the second subband electron. This means that, by virtue of the band bending effects, the first electron subband originates from a narrow well and the second from a wide well. The magnetic-field dependence of Landau-level transitions between the second electron subband and the first heavy-hole subband shows an enhancement of an excitonic emission near the Fermi edge. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：633 / 638
页数：6
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