中国物理B ›› 2017, Vol. 26 ›› Issue (9): 97302-097302.doi: 10.1088/1674-1056/26/9/097302

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

Polaron effects in cylindrical GaAs/AlxGa1-xAs core-shell nanowires

Hui Sun(孙慧), Bing-Can Liu(刘炳灿), Qiang Tian(田强)   

  1. 1 Department of Physics, Beijing Normal University, Beijing 100875, China;
    2 Department of Fundamental Courses, Academy of Armored Forces Engineering, Beijing 100072, China
  • 收稿日期:2017-02-03 修回日期:2017-06-01 出版日期:2017-09-05 发布日期:2017-09-05
  • 通讯作者: Qiang Tian E-mail:qiangtian163@163.com
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 10574011 and 10974017).

Polaron effects in cylindrical GaAs/AlxGa1-xAs core-shell nanowires

Hui Sun(孙慧)1, Bing-Can Liu(刘炳灿)2, Qiang Tian(田强)1   

  1. 1 Department of Physics, Beijing Normal University, Beijing 100875, China;
    2 Department of Fundamental Courses, Academy of Armored Forces Engineering, Beijing 100072, China
  • Received:2017-02-03 Revised:2017-06-01 Online:2017-09-05 Published:2017-09-05
  • Contact: Qiang Tian E-mail:qiangtian163@163.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 10574011 and 10974017).

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摘要： By the fractal dimension method, the polaron properties in cylindrical GaAs/AlxGa1-xAs core-shell nanowire are explored. In this study, the polaron effects in GaAs/AlxGa1-xAs core-shell nanowire at different values of shell width and aluminum concentration are discussed. The polaron binding energy, polaron mass shift and fractal dimension parameter are numerically worked out each as a function of core radius. The calculation results show that the binding energy and mass shift of the polaron first increase and then decrease as the core radius increases, forming their corresponding maximum values for different aluminum concentrations at a given shell width. Polaron problems in the cylindrical GaAs/AlxGa1-xAs core-shell nanowire are solved simply by using the fractal dimension method to avoid complex and lengthy calculations.

关键词: core-shell nanowire, core radius, polaron effects, fractal dimension

Abstract: By the fractal dimension method, the polaron properties in cylindrical GaAs/AlxGa1-xAs core-shell nanowire are explored. In this study, the polaron effects in GaAs/AlxGa1-xAs core-shell nanowire at different values of shell width and aluminum concentration are discussed. The polaron binding energy, polaron mass shift and fractal dimension parameter are numerically worked out each as a function of core radius. The calculation results show that the binding energy and mass shift of the polaron first increase and then decrease as the core radius increases, forming their corresponding maximum values for different aluminum concentrations at a given shell width. Polaron problems in the cylindrical GaAs/AlxGa1-xAs core-shell nanowire are solved simply by using the fractal dimension method to avoid complex and lengthy calculations.

Key words: core-shell nanowire, core radius, polaron effects, fractal dimension

中图分类号:  (Electronic transport in nanoscale materials and structures)

  • 73.63.-b
73.90.+f (Other topics in electronic structure and electrical properties of surfaces, interfaces, thin films, and low-dimensional structures) 73.63.Nm (Quantum wires)