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Weak anti-localization of the two-dimensional electron gas in modulation-doped AlxGa1-xN/GaN heterostructures with two subbands occupation

  • J. Lu*
  • , B. Shen
  • , N. Tang
  • , D. J. Chen
  • , H. Zhao
  • , D. W. Liu
  • , R. Zhang
  • , Y. Shi
  • , Y. D. Zheng
  • , Z. J. Qiu
  • , Y. S. Gui
  • , B. Zhu
  • , W. Yao
  • , J. H. Chu
  • , K. Hoshino
  • , Y. Arakawa
  • *此作品的通讯作者

科研成果: 期刊稿件文章同行评审

摘要

Weak anti-localization of the two-dimensional electron gas (2DEG) in a modulation-doped Al0.22Ga0.78N/GaN single heterostructure has been investigated through magnetoresistance measurements at low temperatures. The elastic scattering time τe, dephasing time τφ and spin-orbit scattering time τso at various temperatures are obtained. When the second subband in the triangular quantum well at the heterointerface is occupied by the 2DEG, the weak anti-localization is observed clearly, which is thought to be due to the strong spin-orbit effect induced by the intersubband scattering. The spin-orbit effect and the intersubband scattering become stronger with increasing temperature.

源语言英语
页(从-至)3125-3127
页数3
期刊Applied Physics Letters
85
15
DOI
出版状态已出版 - 11 10月 2004
已对外发布

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