Ribeiro E, Govorov AO, Carvalho W, Medeiros-Ribeiro G. Aharonov-Bohm signature for neutral polarized excitons in type-II quantum dot ensembles.
PHYSICAL REVIEW LETTERS 2004;
92:126402. [PMID:
15089692 DOI:
10.1103/physrevlett.92.126402]
[Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2003] [Indexed: 05/24/2023]
Abstract
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.
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