中国物理B ›› 2006, Vol. 15 ›› Issue (11): 2657-2660.doi: 10.1088/1009-1963/15/11/033

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇    下一篇

Effect of magnetic field on the terahertz radiationdetection in high electron mobility transistors

马明瑞, 陈钰玲, 王长   

  1. State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences and Graduate School of Chinese Academy of Sciences, Shanghai 200050, China
  • 收稿日期:2006-02-28 修回日期:2006-06-23 出版日期:2006-11-20 发布日期:2006-11-20
  • 基金资助:
    Project supported by the National Natural Science Foundation for outstanding Young Scientists of China (Grant No 60425415), the Major Program of the National Natural Science Foundation of China (Grant No 10390162), and the Shanghai Municipal Commission of Science and Technology of China (Grant No 05XD14020).

Effect of magnetic field on the terahertz radiationdetection in high electron mobility transistors

Ma Ming-Rui(马明瑞)†, Chen Yu-Ling(陈钰玲), and Wang Chang(王长)‡   

  1. State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences and Graduate School of Chinese Academy of Sciences, Shanghai 200050, China
  • Received:2006-02-28 Revised:2006-06-23 Online:2006-11-20 Published:2006-11-20
  • Supported by:
    Project supported by the National Natural Science Foundation for outstanding Young Scientists of China (Grant No 60425415), the Major Program of the National Natural Science Foundation of China (Grant No 10390162), and the Shanghai Municipal Commission of Science and Technology of China (Grant No 05XD14020).

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摘要： In this paper, we make a theoretical investigation of the plasma-wave instability mechanism in a two-dimensional electron fluid in a high electron mobility transistor (HEMT) driven by the terahertz radiation in the presence of a perpendicular magnetic field. It is found that the resonant peaks of the gate-to-source/drain admittances and detection responsivity depend on the strength of the external magnetic field. Such phenomena can be used to produce a desired effect by adjusting the intensity of the magnetic field.

Abstract: In this paper, we make a theoretical investigation of the plasma-wave instability mechanism in a two-dimensional electron fluid in a high electron mobility transistor (HEMT) driven by the terahertz radiation in the presence of a perpendicular magnetic field. It is found that the resonant peaks of the gate-to-source/drain admittances and detection responsivity depend on the strength of the external magnetic field. Such phenomena can be used to produce a desired effect by adjusting the intensity of the magnetic field.

Key words: terahertz radiation, magnetic field, HEMT

中图分类号:  (Waves, oscillations, and instabilities in plasmas and intense beams)

  • 52.35.-g
52.40.Db (Electromagnetic (nonlaser) radiation interactions with plasma) 52.65.-y (Plasma simulation)