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Aharonov‐Bohm Oscillations in the Exciton Luminescence from a Semiconductor Nanoring
Author(s) -
Römer R.A.,
Raikh M.E.
Publication year - 2000
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/1521-3951(200009)221:1<535::aid-pssb535>3.0.co;2-m
Subject(s) - nanoring , exciton , biexciton , semiconductor , photoluminescence , magnetic flux , condensed matter physics , physics , ring (chemistry) , aharonov–bohm effect , quantum dot , position (finance) , quantum mechanics , magnetic field , chemistry , optoelectronics , economics , organic chemistry , finance
Magnetoluminescence of an exciton confined within a semiconductor ring is studied theoretically. We demonstrate that, despite the net electrical neutrality of the exciton, both the spectral position and the intensity of the photoluminescence peak exhibit periodic oscillations as a function of magnetic flux threading the ring. The period of oscillations is Φ 0 — the universal flux quantum. The origin of the effect is the finite probability for bound electron and hole to tunnel in the opposite directions and meet each other on the opposite side of the ring.