Binding Energy of an Exciton Bound to Ionized Acceptor in Quantum Dots
Binding Energy of an Exciton Bound to Ionized Acceptor in Quantum Dots作者机构:Department of PhysicsGuangzhou UniversityGuangzhou 510405China
出 版 物:《Communications in Theoretical Physics》 (理论物理通讯(英文版))
年 卷 期:2001年第36卷第11期
页 面:631-634页
核心收录:
基 金:国家自然科学基金
主 题:quantum dot,exciton complex,few-body physics
摘 要:Binding energiesfor an exciton (X ) trapped in the two-dimensional quantum dot by a negative ion located on the z axis at a distance from the dot plane are calculated by using the method of few-body *** configuration is called a barrier (A-,X) *** dependence of the binding energy of the ground state of the barrier (A-,X)center on the electron-to-hole mass ratio for a few values of the distance d between the fixed negative ion on the z axis and the dot plane is *** find that when d → 0,the barrier (A-,X) center has not any bound *** also studied the stability and binding energy of the ground state of the barrier (A-,X) center in a parabolic quantum dot as a function of the distance d between the fixed negative ion on the z axis and the dot plane.