Resonance states in a cylindrical quantum dot with an external magnetic field

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Bound and resonance states of quantum dots play a significant role in photo-absorption processes. In this work, we analyze a cylindrical quantum dot, its spectrum and, in particular, the behaviour of the lowest resonance state when a magnetic field is applied along the symmetry axis of the cyli...

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Detalles Bibliográficos
Autores principales: Ramos, Alba Yanina, Osenda, Omar
Formato: article
Lenguaje:Inglés
Publicado: 2022
Materias:
Electronic structure of nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals
Resonances
Fidelity
Variational techniques
Acceso en línea:http://hdl.handle.net/11086/24474
Aporte de:
Repositorio Digital Universitario (UNC) de Universidad Nacional de Córdoba
id I10-R141-11086-24474
record_format dspace
institution Universidad Nacional de Córdoba
institution_str I-10
repository_str R-141
collection Repositorio Digital Universitario (UNC)
language Inglés
topic Electronic structure of nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals
Resonances
Fidelity
Variational techniques
spellingShingle Electronic structure of nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals
Resonances
Fidelity
Variational techniques
Ramos, Alba Yanina
Osenda, Omar
Resonance states in a cylindrical quantum dot with an external magnetic field
topic_facet Electronic structure of nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals
Resonances
Fidelity
Variational techniques
description Bound and resonance states of quantum dots play a significant role in photo-absorption processes. In this work, we analyze a cylindrical quantum dot, its spectrum and, in particular, the behaviour of the lowest resonance state when a magnetic field is applied along the symmetry axis of the cylinder. To obtain the energy and width of the resonance we use the complex rotation method. As it is expected the structure of the spectrum is strongly influenced by the Landau levels associated to the magnetic field. We show how this structure affects the behaviour of the resonance state and that the binding of the resonance has a clear interpretation in terms of the Landau levels and the probability of localization of the resonance state. The localization probability and the fidelity of the lowest energy state allow to identify two different physical regimes, a large field-small quantum dot radius regime and a small field-large quantum dot radius, where the binding of the resonance is dominated by the field strength or the potential well, respectively.
format article
author Ramos, Alba Yanina
Osenda, Omar
author_facet Ramos, Alba Yanina
Osenda, Omar
author_sort Ramos, Alba Yanina
title Resonance states in a cylindrical quantum dot with an external magnetic field
title_short Resonance states in a cylindrical quantum dot with an external magnetic field
title_full Resonance states in a cylindrical quantum dot with an external magnetic field
title_fullStr Resonance states in a cylindrical quantum dot with an external magnetic field
title_full_unstemmed Resonance states in a cylindrical quantum dot with an external magnetic field
title_sort resonance states in a cylindrical quantum dot with an external magnetic field
publishDate 2022
url http://hdl.handle.net/11086/24474
work_keys_str_mv AT ramosalbayanina resonancestatesinacylindricalquantumdotwithanexternalmagneticfield
AT osendaomar resonancestatesinacylindricalquantumdotwithanexternalmagneticfield
bdutipo_str Repositorios
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