Study of cyclotron resonance in very high magnetic fields and nonparabolic energy band in InGaAs/InAlAs quantum wells

被引：0
|
作者：
Kotera, N. [1 ]
Shimamoto, Y. [1 ]
Mishima, T. [1 ]
Miura, N. [1 ]
机构：
[1] Kyushu Inst of Technology, Fukuoka, Japan
来源：
Physica B: Condensed Matter | 1996年 / 227卷 / 1-4期
关键词：
Carbon dioxide lasers - Electrons - Experiments - Magnetic fields - Semiconductor quantum wells;
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学科分类号：
摘要：
Infrared cyclotron resonance of two-dimensional electrons in modulation-doped InGaAs/InAlAs multi-quantum wells lattice-matched to InP substrates has been studied using CO2 laser and pulsed magnetic fields up to 100 T. Apparent cyclotron effective masses in a direction parallel to the quantum well plane were 0.066 m0 at 24 K and 0.067 m0 at room temperature in the 5-nm-wide wells, which were quite larger than the bulk band-edge mass of 0.041 m0. The experiments gave an evidence of strong nonparabolicity in conduction subbands of narrow quantum wells.
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页码：349 / 351
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