Ribeiro E, Govorov A O, Carvalho W, Medeiros-Ribeiro G
Laboratório Nacional de Luz Síncrotron, P.O. Box 6192, 13084-971 Campinas-SP, Brazil.
Phys Rev Lett. 2004 Mar 26;92(12):126402. doi: 10.1103/PhysRevLett.92.126402. Epub 2004 Mar 24.
The Aharonov-Bohm effect is commonly believed to be a typical feature of the motion of a charged particle interacting with the electromagnetic vector potential. Here we present a magnetophotoluminescence study of type-II InP/GaAs self-assembled quantum dots, revealing the Aharonov-Bohm-type oscillations for neutral excitons when the hole ground state changes its angular momentum from l(h)=0 to l(h)=1, 2, and 3. The hole-ring parameters derived from a simple model are in excellent agreement with the structural parameters for this system.
阿哈罗诺夫 - 玻姆效应通常被认为是带电粒子与电磁矢量势相互作用运动的一个典型特征。在此，我们展示了对II型InP/GaAs自组装量子点的磁光致发光研究，揭示了当中性激子的空穴基态角动量从l(h)=0变为l(h)=1、2和3时的阿哈罗诺夫 - 玻姆型振荡。从一个简单模型得出的空穴环参数与该系统的结构参数高度吻合。
