中国物理B ›› 2004, Vol. 13 ›› Issue (8): 1339-1343.doi: 10.1088/1009-1963/13/8/028

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

Transport characteristics of Rabi oscillations in the two-band superlattices

段素青, 吴彬毅, 王志刚, 赵宪庚   

  1. Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
  • 收稿日期:2003-12-15 修回日期:2004-02-06 出版日期:2005-06-30 发布日期:2005-06-30
  • 基金资助:
    Project supported by the National Natural Science Foundations of China (Grant Nos 10274007 and 90103027), and by the Foundation of the China Academy of Engineering and Physics.

Transport characteristics of Rabi oscillations in the two-band superlattices

Duan Su-Qing (段素青), Wu Bin-Yi (吴彬毅), Wang Zhi-Gang (王志刚), Zhao Xian-Geng (赵宪庚)   

  1. Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
  • Received:2003-12-15 Revised:2004-02-06 Online:2005-06-30 Published:2005-06-30
  • Supported by:
    Project supported by the National Natural Science Foundations of China (Grant Nos 10274007 and 90103027), and by the Foundation of the China Academy of Engineering and Physics.

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摘要： We investigated the transport characteristics of Rabi oscillations, by using numerical methods, within a two-band tight-binding model driven by dc－ac electric fields. We found that Rabi oscillations make the long-time average current a sharply change, i.e. the current have resonant peaks appearing. Rabi oscillations are destroyed by dephasing; these peaks are the signatures of Rabi oscillations on the current response. The strong interband coupling will change the conditions of Rabi oscillations and, correspondingly, changes the places where the current resonant peaks appear.

Abstract: We investigated the transport characteristics of Rabi oscillations, by using numerical methods, within a two-band tight-binding model driven by dc－ac electric fields. We found that Rabi oscillations make the long-time average current a sharply change, i.e. the current have resonant peaks appearing. Rabi oscillations are destroyed by dephasing; these peaks are the signatures of Rabi oscillations on the current response. The strong interband coupling will change the conditions of Rabi oscillations and, correspondingly, changes the places where the current resonant peaks appear.

Key words: Rabi oscillations, interband coupling, current resonant peaks, quasi-energy spectrum

中图分类号:  (Superlattices)

  • 73.21.Cd
73.50.-h (Electronic transport phenomena in thin films)