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Transport properties of a spin-split two-dimensional electron gas in an In0.53Ga0.47As/InP quantum well structure

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10 Author(s)
Zhou, Y.M. ; National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Science, Shanghai 200083, People’s Republic of China ; Shang, L.Y. ; Yu, G. ; Gao, K.H.
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We study the magnetotransport properties of a gated In0.53Ga0.47As/InP quantum well structure in the presence of spin splitting when only one electronic subband is occupied. We develop an analytical method to extract the quantum mobilities for the two spin subbands. Ionized impurity scattering and alloy disorder scattering are determined to be important in this system. Larger quantum mobility is found for the higher-energy spin subband. We also demonstrate that the difference between the quantum mobilities for the two spin subbands can be altered with the gate.

Published in:

Journal of Applied Physics  (Volume:106 ,  Issue: 7 )