Linear and nonlinear optical properties of semiconductor nanorings with magnetic field and disorder - Influence on excitons and biexcitons

被引：0

作者：

T. Meier

P. Thomas

S.W. Koch

机构：

[1] Department of Physics and Material Sciences Center,

[2] Philipps University,undefined

[3] Renthof 5,undefined

[4] 35032 Marburg,undefined

[5] Germany,undefined

来源：

The European Physical Journal B - Condensed Matter and Complex Systems | 2001年 / 22卷

关键词：

Oscillator Strength; Nonlinear Optical Property; Exciton Binding Energy; Exciton Energy; Nonlinear Optical Response;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Linear and nonlinear optical absorption spectra are studied theoretically for semiconductor nanorings penetrated by a magnetic field. Due to the Aharanov-Bohm effect the spectral position as well as the oscillator strength of the exciton change periodically as function of the magnetic flux enclosed by the ring. In the nonlinear differential absorption spectra it is found that the magnetic field strongly modifies Coulomb many-body correlations. In particular, the magnetic-field-induced increase of the exciton binding energy is accompanied by a decrease of the biexciton binding energy. The persistence of these effects in the presence of energetic disorder is analyzed.

引用

页码：249 / 256

页数：7