Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/29614
metadata.artigo.dc.title: Landau quantization, Aharonov-Bohm effect and two-dimensional pseudoharmonic quantum dot around a screw dislocation
metadata.artigo.dc.creator: Filgueiras, Cleverson
Rojas, Moisés
Aciole, Gilson
Silva, Edilberto O.
metadata.artigo.dc.subject: Nanoscale physics
Quantum physics
Burgers vector
Screw dislocation
Física em nanoescala
Física quântica
Vetor Burgers
Deslocamento parafuso
metadata.artigo.dc.publisher: Cornell University
metadata.artigo.dc.date.issued: Jun-2016
metadata.artigo.dc.identifier.citation: FILGUEIRAS, C. et al. Landau quantization, Aharonov-Bohm effect and two-dimensional pseudoharmonic quantum dot around a screw dislocation. Condensed Matter, [S. l.], p. 1-8, June 2016. doi: 10.1016/j.physleta.2016.09.025.
metadata.artigo.dc.description.abstract: In this paper, we investigate the influence of a screw dislocation on the energy levels and the wavefunctions of an electron confined in a two-dimensional pseudoharmonic quantum dot under the influence of an external magnetic field inside a dot and Aharonov-Bohm field inside a pseudodot. The exact solutions for energy eigenvalues and wavefunctions are computed as functions of applied uniform magnetic field strength, Aharonov-Bohm flux, magnetic quantum number and the parameter characterizing the screw dislocation, the Burgers vector. We investigate the modifications due to the screw dislocation on the light interband absorption coefficient and absorption threshold frequency. Two scenarios are possible, depending on if singular effects either manifest or not. We found that as the Burgers vector increases, the curves of frequency are pushed up towards of the growth of it. One interesting aspect which we have observed is that the Aharonov-Bohm flux can be tuned in order to cancel the screw effect of the model.
metadata.artigo.dc.identifier.uri: https://arxiv.org/abs/1606.02798
http://repositorio.ufla.br/jspui/handle/1/29614
metadata.artigo.dc.language: en_US
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