It is commonly believed that the Aharonov-Bohm (AB) effect is 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, unambiguously revealing the Aharonov-Bohm-type oscillations for neutral excitons when the hole ground state changes its angular momentum from lh = 0 to lh = 1, 2, and 3. The hole ring parameters derived from a simple model are in excellent agreement with the structural parameters for this system.
@article{arxiv.cond-mat/0304092,
title = {Aharonov-Bohm signature for neutral excitons in type-II quantum dot ensembles},
author = {E. Ribeiro and G. Medeiros-Ribeiro and W. Carvalho and A. O. Govorov},
journal= {arXiv preprint arXiv:cond-mat/0304092},
year = {2009}
}