Author:
Shang Li-Yan ,Lin Tie ,Zhou Wen-Zheng ,Huang Zhi-Ming ,Li Dong-Lin ,Gao Hong-Ling ,Cui Li-Jie ,Zeng Yi-Ping ,Guo Shao-Ling ,Chu Jun-Hao ,
Abstract
Magnetotransport properties of two-dimensional electron gas have been investigated for three In0.53Ga0.47As/In0.52Al0.48As quantum well samples having two occupied subbands with different well widths. When the intersubband scattering is considered, we have obtained the subband density, transport scattering time, quantum scattering time and intersubband scattering time, respectively, by analyzing the result of fast Fourier transform of the first derivative of Shubnikov-de Haas oscillations. It is found that the main scattering mechanism is due to small-angle scattering, such as ionized impurity scattering, for the first subband electrons.
Publisher
Acta Physica Sinica, Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences
Subject
General Physics and Astronomy
Cited by
3 articles.
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