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Antilocalization effect in HgCdTe film
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National Laboratory for Infrared Physics,Shanghai Institute of Technical Physics,Chinese Academy of Science,National Laboratory for Infrared Physics,Shanghai Institute of Technical Physics,Chinese Academy of Science,National Laboratory for Infrared Physics,Shanghai Institute of Technical Physics,Chinese Academy of Science,Key Laboratory of Polar Materials and Devices of Ministry of Education,School of Science and Technology of Information,East China Normal University,National Laboratory for Infrared Physics,Shanghai Institute of Technical Physics,Chinese Academy of Science,National Laboratory for Infrared Physics,Shanghai Institute of Technical Physics,Chinese Academy of Science,National Laboratory for Infrared Physics,Shanghai Institute of Technical Physics,Chinese Academy of Science,Key Laboratory of Infrared Imaging Materials and Detectors,Shanghai Institute of Technical Physics,Chinese Academy of Science,Key Laboratory of Infrared Imaging Materials and Detectors,Shanghai Institute of Technical Physics,Chinese Academy of Science,Key Laboratory of Infrared Imaging Materials and Detectors,Shanghai Institute of Technical Physics,Chinese Academy of Science,National Laboratory for Infrared Physics,Shanghai Institute of Technical Physics,Chinese Academy of Science,National Laboratory for Infrared Physics,Shanghai Institute of Technical Physics,Chinese Academy of Science

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    Abstract:

    The antilocalization effect is observed by magnetotransport measurement at low temperature on a Hg0.77Cd0.23 Te sample prepared by liquid epitaxy technique, which suggests a strong spin-orbit interaction within this system. The phase coherence time and spin-orbit scattering time of electrons are extracted by fitting the experiment data with the Hikami-Larkin-Nagaoka (HLN) theory plus the Drude conductance model. According to the temperature dependence of phase coherence time, we also find that the Nyquist mechanism dominates the dephasing process.

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WEI Lai-Ming, LIU Xin-Zhi, YU Guo-Lin, GAO Kuang-Hong, WANG Qi-Wei, LIN Tie, GUO Shao-Ling, WEI Yan-Feng, YANG Jian-Rong, HE Li, DAI Ning, CHU Jun-Hao. Antilocalization effect in HgCdTe film[J]. Journal of Infrared and Millimeter Waves,2013,32(2):141~144

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History
  • Received:March 27,2012
  • Revised:October 31,2012
  • Adopted:April 12,2012
  • Online: April 23,2013
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