中国物理B ›› 2004, Vol. 13 ›› Issue (9): 1544-1548.doi: 10.1088/1009-1963/13/9/031

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Dynamic dc voltage band in vertical transport of superlattices

吴彬毅, 段素青, 赵宪庚   

  1. Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
  • 收稿日期:2004-02-20 修回日期:2004-04-30 出版日期:2005-06-21 发布日期:2005-06-21
  • 基金资助:
    Project supported in part by the National Natural Science Foundation of China (Grant Nos 10274007 and 90103027), and a Grant of the China Academy of Engineering Physics.

Dynamic dc voltage band in vertical transport of superlattices

Wu Bin-Yi (吴彬毅), Duan Su-Qing (段素青), Zhao Xian-Geng (赵宪庚)   

  1. Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
  • Received:2004-02-20 Revised:2004-04-30 Online:2005-06-21 Published:2005-06-21
  • Supported by:
    Project supported in part by the National Natural Science Foundation of China (Grant Nos 10274007 and 90103027), and a Grant of the China Academy of Engineering Physics.

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摘要： By the numerical method, we show a transition process from static to dynamic electric-field domain formation in semiconductor superlattices. During this transition, there can be noticed a sawtooth-like zone in which static and dynamic electric-field domain zones appear alternatively with increasing voltage. Therefore, a dynamic dc voltage band emerges from each sawtooth-like branch of the current－voltage characteristic. These results are qualitatively in agreement with experiment.

Abstract: By the numerical method, we show a transition process from static to dynamic electric-field domain formation in semiconductor superlattices. During this transition, there can be noticed a sawtooth-like zone in which static and dynamic electric-field domain zones appear alternatively with increasing voltage. Therefore, a dynamic dc voltage band emerges from each sawtooth-like branch of the current－voltage characteristic. These results are qualitatively in agreement with experiment.

Key words: dynamic dc voltage band, phase diagram, sawtooth-like zone, semiconductor superlattices

中图分类号:  (Other semiconductor-to-semiconductor contacts, p-n junctions, and heterojunctions)

  • 73.40.Lq
64.60.-i (General studies of phase transitions)