Title
Interband optical properties of concentric type-I nanorings in a normal magnetic field
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Warszawa ,
Subject
Physics
Source (journal)
Acta physica Polonica: A: general physics, solid state physics, applied physics. - Warszawa
Volume/pages
117(2010) :5 , p. 733-737
ISSN
0587-4246
ISI
000278221700003
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Two concentric two-dimensional GaAs/(Al,Ga)As nanorings in a normal magnetic field are theoretically studied. The single-band effective mass approximation is adopted for both the electron and the hole states, and the analytical solutions are given. We find that the electronic single particle states are arranged in pairs, which exhibit anticrossings and the orbital momentum transitions in the energy spectrum when magnetic field increases. Their period is essentially determined by the radius of the outer ring. The oscillator strength for interband transitions is strongly reduced close to each anticrossing. We show that an optical excitonic Aharonov-Bohm effect may occur in concentric nanorings.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/369dce/5eabbe76.pdf
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