Topological structure effect on far-infrared spectra in a GaAs/InAs nanoring  

作　　者：谷利英 李艳芳 楚卫东 卫英慧 

机构地区：[1]College of Materials Science and Engineering,Taiyuan University of Technology [2]Institute of Applied Physics and Computational Mathematics

出　　处：《Chinese Physics B》2012年第3期383-388,共6页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant No. 11074025);the National Basic Research Program of China (Grant No. 2011CB922200);the China Academy of Engineering and Physics(‘909’)

摘　　要：On the basis of the growth mechanism of a GaAs/InAs nanoring, we propose a fine model which reflects the confinement details of real nanoring. Through calculations of the two-electron energy and far-infrared （FIR） spectra, we find that the ring topological structure and electron-electron interaction have great influence on the FIR spectra. The two unknown transition peaks in the experiment are determined theoretically. The theoretical results are in good agreement with the experiments.On the basis of the growth mechanism of a GaAs/InAs nanoring, we propose a fine model which reflects the confinement details of real nanoring. Through calculations of the two-electron energy and far-infrared （FIR） spectra, we find that the ring topological structure and electron-electron interaction have great influence on the FIR spectra. The two unknown transition peaks in the experiment are determined theoretically. The theoretical results are in good agreement with the experiments.

关 键 词：NANORING topological structure far-infrared spectrum confinement potential 

分 类 号：O488[理学—固体物理]