中国物理B ›› 2014, Vol. 23 ›› Issue (3): 37306-037306.doi: 10.1088/1674-1056/23/3/037306

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

Revivals of Zitterbewegung in the Bernevig–Hughes–Zhang model in the quantum spin Hall regime with a laser pulse

王义翔, 吴亚敏   

  1. School of Science, Jiangnan University, Wuxi 214122, China
  • 收稿日期:2013-03-19 修回日期:2013-08-20 出版日期:2014-03-15 发布日期:2014-03-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11247204 and 61178032) and the Fundamental Research Funds for the Central Universities, China (Grant No. JUSRP 11211).

Revivals of Zitterbewegung in the Bernevig–Hughes–Zhang model in the quantum spin Hall regime with a laser pulse

Wang Yi-Xiang (王义翔), Wu Ya-Min (吴亚敏)   

  1. School of Science, Jiangnan University, Wuxi 214122, China
  • Received:2013-03-19 Revised:2013-08-20 Online:2014-03-15 Published:2014-03-15
  • Contact: Wang Yi-Xiang E-mail:wangyixiang0406@gmail.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11247204 and 61178032) and the Fundamental Research Funds for the Central Universities, China (Grant No. JUSRP 11211).

摘要: We theoretically investigate the Zitterbewegung (ZB) behavior of electrons in the Bernevig–Hughes–Zhang model with a short laser pulse. To obtain a steady picture, we fix the electron on the Landau levels with a magnetic field. The ZB motion and the electromagnetic radiations in the quantum spin Hall regime are given. We find that over a shorter time, the electromagnetic radiations show a quasi-classical cyclotron oscillation, while over a longer time, they exhibit a clear revival picture. The resulting revival time and excited electric field are large enough to make experimental detection accessible.

关键词: quantum well, Zitterbewegung, electromagnetic radiation

Abstract: We theoretically investigate the Zitterbewegung (ZB) behavior of electrons in the Bernevig–Hughes–Zhang model with a short laser pulse. To obtain a steady picture, we fix the electron on the Landau levels with a magnetic field. The ZB motion and the electromagnetic radiations in the quantum spin Hall regime are given. We find that over a shorter time, the electromagnetic radiations show a quasi-classical cyclotron oscillation, while over a longer time, they exhibit a clear revival picture. The resulting revival time and excited electric field are large enough to make experimental detection accessible.

Key words: quantum well, Zitterbewegung, electromagnetic radiation

中图分类号:  (Quantum wells)

  • 73.63.Hs
73.50.Fq (High-field and nonlinear effects)