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.
Received: 20 February 2004
Revised: 30 April 2004
Accepted manuscript online:
PACS:
73.40.Lq
(Other semiconductor-to-semiconductor contacts, p-n junctions, and heterojunctions)
Fund: 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.
Cite this article:
Wu Bin-Yi (吴彬毅), Duan Su-Qing (段素青), Zhao Xian-Geng (赵宪庚) Dynamic dc voltage band in vertical transport of superlattices 2004 Chinese Physics 13 1544
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