Search

Article

x

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

Study of persistent photoconductivity and subband electronic properties of the two-dimensional electron gas in modulation doped GaAs/AlGaAs structure

Shu Qiang Shu Yong-Chun Zhang Guan-Jie Liu Ru-Bin Yao Jiang-Hong Pi Biao Xing Xiao-Dong Xu Jing-Jun Lin Yao-Wang Wang Zhan-Guo

Study of persistent photoconductivity and subband electronic properties of the two-dimensional electron gas in modulation doped GaAs/AlGaAs structure

Shu Qiang, Shu Yong-Chun, Zhang Guan-Jie, Liu Ru-Bin, Yao Jiang-Hong, Pi Biao, Xing Xiao-Dong, Xu Jing-Jun, Lin Yao-Wang, Wang Zhan-Guo
PDF
Get Citation

(PLEASE TRANSLATE TO ENGLISH

BY GOOGLE TRANSLATE IF NEEDED.)

Metrics
  • Abstract views:  4770
  • PDF Downloads:  1402
  • Cited By: 0
Publishing process
  • Received Date:  12 July 2005
  • Accepted Date:  03 August 2005
  • Published Online:  20 March 2006

Study of persistent photoconductivity and subband electronic properties of the two-dimensional electron gas in modulation doped GaAs/AlGaAs structure

  • 1. (1)南开大学泰达应用物理学院,南开大学弱光非线性光子学材料及其先进制备技术教育部 重点实验室,天津 300457; (2)南开大学泰达应用物理学院,南开大学弱光非线性光子学材料及其先进制备技术教育部 重点实验室,天津 300457;中国科学院半导体研究所半导体材料科学重点实验室,北京 100083

Abstract: We obtained the high mobility of μ2K=1.78×106 cm2/V·s in Si-doped GaAs/AlGaAs two-dimensional electron gas (2DEG) structures . After the sample was illuminated by a light-emitting diode in magnetic fields up to 6 T at T=2K, we did observe the persistent photoconductivity effect and th e electron density increased obviously. The electronic properties of 2DEG have b een studied by Quantum-Hall-effect and Shubnikov-de Haas (SdH) oscillation measu rements. We found that the electron concentrations of two subbands increase simu ltaneity with the increasing total electron concentration, and the electron mobi lity also increases obviously after being illuminated. At the same time, we also found that the electronic quantum lifetime becomes shorter, and a theoretical e xplunation is given through the widths of integral quantum Hall plateaus.

Catalog

    /

    返回文章
    返回