J4 ›› 2009, Vol. 26 ›› Issue (4): 477-481.

• 半导体光电 • 上一篇    下一篇

温度对非对称量子点中强磁耦合极化子声子平均数的影响

额尔敦朝鲁1 王宝昌2   

  1. 1 河北科技师范学院凝聚态物理研究所,河北 秦皇岛 066004; 
    2 秦皇岛外国语职业学院传媒系,河北 秦皇岛 066311
  • 收稿日期:2008-08-24 修回日期:2008-10-22 出版日期:2009-07-28 发布日期:2009-06-29
  • 通讯作者: 额尔敦朝鲁(1960-),男,内蒙古通辽市人,教授,研究生导师,主要从事低维量子结构中元激发理论研究. E-mail:eerdunchaolu@sohu.com
  • 基金资助:

    河北省自然科学基金项目(A2008000463)和河北科技师范学院博士基金项目(2006D001)

Influence of temperature on the mean number of phonons for strong-coupling magnetopolaron in an asymmetric quantum dot

E Er-Dui-Chao-Lu1, Wang-Bao-Chang2   

  1. 1 Institute of Condensed matter Physics, Hebei Normal University of Science & Technology, Qinhuangdao 066004, China; 
    2 Department of Mass Media, Qinhuangdao Foreign Language Professional College, Qinhuangdao 066311, China
  • Received:2008-08-24 Revised:2008-10-22 Published:2009-07-28 Online:2009-06-29

摘要:

采用Huybrechts线性组合算符法和LLP变分法,研究了温度对非对称抛物量子点中强耦合磁极化子声子平均数的影响。数值结果表明,非对称量子点中强耦合磁极化子的声子平均数随温度的升高而减小。另外,温度还对磁极化子的声子平均数随量子点的横向受限强度、纵向受限强度、外磁场的回旋频率和电子—声子耦合强度的变化产生显著影响.

关键词: 量子光学, 声子平均数, 线性组合算符法, 非对称量子点, 强耦合磁极化子, 温度特性

Abstract:

Influence of temperature on the mean number of phonons for strong-coupling magnetopolaron in an asymmetric quantum dot are studied by using the Huybrechts’ linear combination operator and the LLP variational method. Numerical results indicate that the mean number of phonons for strong-coupling magnetopolaron will decrease with increasing temperature. The changes of the mean number of phonons of magnetopolaron changing with the transverse effective confinement strength, longitudinal effective confinement strength, cyclotron frequency and the electron-phonon coupling strength are strongly related to the temperature.

Key words: quantum optics, mean number of phonons, linear combination operator method, asymmetry quantum dot, strong-coupling magnetopolaron, temperature properties

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