中国物理B ›› 2004, Vol. 13 ›› Issue (6): 954-957.doi: 10.1088/1009-1963/13/6/029

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Observation of the current－voltage plateau-like structure of resonant tunnelling diode with prewells under different magnetic fields

仇志军1, 张晓昕2, 曾一平2, 王宝强2, 朱占平2   

  1. (1)National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China; (2)Novel Semiconductor Materials Laboratory, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
  • 收稿日期:2003-10-20 修回日期:2004-02-03 出版日期:2004-07-05 发布日期:2005-07-05

Observation of the current－voltage plateau-like structure of resonant tunnelling diode with prewells under different magnetic fields

Zhang Xiao-Xin (张晓昕)a, Zeng Yi-Ping (曾一平)a, Qiu Zhi-Jun (仇志军)b, Wang Bao-Qiang (王宝强)a, Zhu Zhan-Ping (朱占平)a   

  1. a Novel Semiconductor Materials Laboratory, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China; b National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China
  • Received:2003-10-20 Revised:2004-02-03 Online:2004-07-05 Published:2005-07-05

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摘要： We have grown resonant tunnelling diodes (RTDs) with different sized emitter prewells and without a prewell. The current－voltage (I－V) characteristics of them in different magnetic fields were investigated. Two important phenomena were observed. First, a high magnetic field can destroy the plateau-like structure in the I－V curves of the RTD. This phenomenon is ascribed to the fact that the high magnetic field will demolish the coupling between the energy level in the main quantum well and that in the emitter quantum well or in the prewell. Secondly, the existence and size of the prewell are also important factors influencing the plateau-like structure.

关键词: resonant tunnelling diode, plateau-like structure, magnetic field

Abstract: We have grown resonant tunnelling diodes (RTDs) with different sized emitter prewells and without a prewell. The current－voltage (I－V) characteristics of them in different magnetic fields were investigated. Two important phenomena were observed. First, a high magnetic field can destroy the plateau-like structure in the I－V curves of the RTD. This phenomenon is ascribed to the fact that the high magnetic field will demolish the coupling between the energy level in the main quantum well and that in the emitter quantum well or in the prewell. Secondly, the existence and size of the prewell are also important factors influencing the plateau-like structure.

Key words: resonant tunnelling diode, plateau-like structure, magnetic field

中图分类号:  (Junction diodes)

  • 85.30.Kk
72.80.Ey (III-V and II-VI semiconductors) 73.63.Hs (Quantum wells)