Title
Electronic structure and optical absorption of <tex>$GaAs/Al_{x}Ga_{1-x}As$</tex> and <tex>$Al_{x}Ga_{1-x}As/GaAs$</tex> core-shell nanowiresElectronic structure and optical absorption of <tex>$GaAs/Al_{x}Ga_{1-x}As$</tex> and <tex>$Al_{x}Ga_{1-x}As/GaAs$</tex> core-shell nanowires
Author
Faculty/Department
Faculty of Sciences. Physics
Research group
Condensed Matter Theory
Publication type
article
Publication
Lancaster, Pa,
Subject
Physics
Source (journal)
Physical review : B : condensed matter and materials physics. - Lancaster, Pa, 1998 - 2015
Volume/pages
82(2010):23, p. 235425,1-235425,9
ISSN
1098-0121
Article Reference
235425
ISI
000286769100008
Carrier
E-only publicatie
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
The electronic structure of GaAs/AlxGa1−xAs and AlxGa1−xAs/GaAs core-shell nanowires grown in the [001] direction is studied. The k⋅p method with the 6×6 Kohn-Lüttinger Hamiltonian, taking into account the split-off band is used. The variation in the energy level dispersion, the spinor contribution to the ground state and the optical interband absorption are studied. For some range of parameters the top of the valence band exhibits a camelback structure which results in an extra peak in the optical absorption.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/3e3fd7/4b4b36c2.pdf
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