中国物理B ›› 2006, Vol. 15 ›› Issue (1): 203-208.doi: 10.1088/1009-1963/15/1/033

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

Binding energies of an exciton in a Gaussian potential quantum dot

解文方   

  1. Department of Physics, Guangzhou University, Guangzhou 510405,China
  • 出版日期:2006-01-20 发布日期:2006-01-20
  • 基金资助:
    Project supported by the Natural Science Foundation of Guangdong Province, China (Grant No 04009519) and the National Natural Science Foundation of China (Grant No 10475021).

Binding energies of an exciton in a Gaussian potential quantum dot

Xie Wen-Fang (解文方)   

  1. Department of Physics, Guangzhou University, Guangzhou 510405,China
  • Online:2006-01-20 Published:2006-01-20
  • Supported by:
    Project supported by the Natural Science Foundation of Guangdong Province, China (Grant No 04009519) and the National Natural Science Foundation of China (Grant No 10475021).

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摘要： In this paper, an exciton trapped by a Gaussian confining potential quantum dot has been investigated. Calculations are made by using the method of numerical diagonalization of Hamiltonian in the effective-mass approximation. The dependences of binding energies of the ground state and the first excited state on the size of the confining potential and the strength of the magnetic field are analysed explicitly.

Abstract: In this paper, an exciton trapped by a Gaussian confining potential quantum dot has been investigated. Calculations are made by using the method of numerical diagonalization of Hamiltonian in the effective-mass approximation. The dependences of binding energies of the ground state and the first excited state on the size of the confining potential and the strength of the magnetic field are analysed explicitly.

Key words: quantum dot, exciton

中图分类号:  (Excitons and related phenomena)

  • 71.35.-y
73.21.La (Quantum dots) 71.15.Nc (Total energy and cohesive energy calculations) 71.18.+y (Fermi surface: calculations and measurements; effective mass, g factor)