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

作　　者：王义翔 吴亚敏 

机构地区：[1]School of Science, Jiangnan University

出　　处：《Chinese Physics B》2014年第3期509-513,共5页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.11247204 and 61178032);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.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 

分 类 号：O413[理学—理论物理]