Coupled magneto-thermo-electromechanical effects and electronic properties of quantum dots

For the first time, we systemically analyze the influence of magneto-thermo-electromechanical effects on the band structure calculations by using the fully coupled model. We focus on three different types of quantum dots (QDs): (a) ferroelectric, (b) piezomagnetic, and (c) magnetoelectric, with and...

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Detalles Bibliográficos
Autores: Prabhakar, S., Melnik, R., Neittaanmäki, P., Tiihonen, T.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2013
País:España
Institución:Basque Center for Applied Mathematics (BCAM)
Repositorio:BIRD. BCAM's Institutional Repository Data
OAI Identifier:oai:bird.bcamath.org:20.500.11824/426
Acceso en línea:http://hdl.handle.net/20.500.11824/426
Access Level:acceso abierto
Palabra clave:Band structure calculation
Coupled magneto-thermo-electromechanical effects
Ferroelectric
Piezomagnetic and magnetoelectric properties
Quantum dots
Quantum-continuum models
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spelling Coupled magneto-thermo-electromechanical effects and electronic properties of quantum dotsPrabhakar, S.Melnik, R.Neittaanmäki, P.Tiihonen, T.Band structure calculationCoupled magneto-thermo-electromechanical effectsFerroelectricPiezomagnetic and magnetoelectric propertiesQuantum dotsQuantum-continuum modelsFor the first time, we systemically analyze the influence of magneto-thermo-electromechanical effects on the band structure calculations by using the fully coupled model. We focus on three different types of quantum dots (QDs): (a) ferroelectric, (b) piezomagnetic, and (c) magnetoelectric, with and without wetting layers (WLs). We demonstrate that the influence of such coupled effects in the general fully coupled framework for studying properties of QDs can be significant and we quantify these effects in each case. For example, in magnetic GaN/BaTiO3 QDs, we found that the influence of electromechanical effects on the band structure calculations and the spin splitting energy are practically independent of temperature. However, in piezoelectric AlN/GaN QDs, the influence of temperature on the electromechanical effects, electronic properties and spin splitting energy is significant. In particular, in piezoelectric AlN/GaN QDs, the intra-subband energy (i.e., the energy difference between ground and first excited states) decreases with the increase in temperature.201720172013info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/20.500.11824/426reponame:BIRD. BCAM's Institutional Repository Datainstname:Basque Center for Applied Mathematics (BCAM)Ingléshttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84876572215&doi=10.1166%2fjctn.2013.2731&partnerID=40&md5=f45d39501ad3a2b4113a3783873ad971Reconocimiento-NoComercial-CompartirIgual 3.0 Españahttp://creativecommons.org/licenses/by-nc-sa/3.0/es/info:eu-repo/semantics/openAccessoai:bird.bcamath.org:20.500.11824/4262026-06-19T12:47:47Z
dc.title.none.fl_str_mv Coupled magneto-thermo-electromechanical effects and electronic properties of quantum dots
title Coupled magneto-thermo-electromechanical effects and electronic properties of quantum dots
spellingShingle Coupled magneto-thermo-electromechanical effects and electronic properties of quantum dots
Prabhakar, S.
Band structure calculation
Coupled magneto-thermo-electromechanical effects
Ferroelectric
Piezomagnetic and magnetoelectric properties
Quantum dots
Quantum-continuum models
title_short Coupled magneto-thermo-electromechanical effects and electronic properties of quantum dots
title_full Coupled magneto-thermo-electromechanical effects and electronic properties of quantum dots
title_fullStr Coupled magneto-thermo-electromechanical effects and electronic properties of quantum dots
title_full_unstemmed Coupled magneto-thermo-electromechanical effects and electronic properties of quantum dots
title_sort Coupled magneto-thermo-electromechanical effects and electronic properties of quantum dots
dc.creator.none.fl_str_mv Prabhakar, S.
Melnik, R.
Neittaanmäki, P.
Tiihonen, T.
author Prabhakar, S.
author_facet Prabhakar, S.
Melnik, R.
Neittaanmäki, P.
Tiihonen, T.
author_role author
author2 Melnik, R.
Neittaanmäki, P.
Tiihonen, T.
author2_role author
author
author
dc.subject.none.fl_str_mv Band structure calculation
Coupled magneto-thermo-electromechanical effects
Ferroelectric
Piezomagnetic and magnetoelectric properties
Quantum dots
Quantum-continuum models
topic Band structure calculation
Coupled magneto-thermo-electromechanical effects
Ferroelectric
Piezomagnetic and magnetoelectric properties
Quantum dots
Quantum-continuum models
description For the first time, we systemically analyze the influence of magneto-thermo-electromechanical effects on the band structure calculations by using the fully coupled model. We focus on three different types of quantum dots (QDs): (a) ferroelectric, (b) piezomagnetic, and (c) magnetoelectric, with and without wetting layers (WLs). We demonstrate that the influence of such coupled effects in the general fully coupled framework for studying properties of QDs can be significant and we quantify these effects in each case. For example, in magnetic GaN/BaTiO3 QDs, we found that the influence of electromechanical effects on the band structure calculations and the spin splitting energy are practically independent of temperature. However, in piezoelectric AlN/GaN QDs, the influence of temperature on the electromechanical effects, electronic properties and spin splitting energy is significant. In particular, in piezoelectric AlN/GaN QDs, the intra-subband energy (i.e., the energy difference between ground and first excited states) decreases with the increase in temperature.
publishDate 2013
dc.date.none.fl_str_mv 2013
2017
2017
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.11824/426
url http://hdl.handle.net/20.500.11824/426
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://www.scopus.com/inward/record.uri?eid=2-s2.0-84876572215&doi=10.1166%2fjctn.2013.2731&partnerID=40&md5=f45d39501ad3a2b4113a3783873ad971
dc.rights.none.fl_str_mv Reconocimiento-NoComercial-CompartirIgual 3.0 España
http://creativecommons.org/licenses/by-nc-sa/3.0/es/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Reconocimiento-NoComercial-CompartirIgual 3.0 España
http://creativecommons.org/licenses/by-nc-sa/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:BIRD. BCAM's Institutional Repository Data
instname:Basque Center for Applied Mathematics (BCAM)
instname_str Basque Center for Applied Mathematics (BCAM)
reponame_str BIRD. BCAM's Institutional Repository Data
collection BIRD. BCAM's Institutional Repository Data
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repository.mail.fl_str_mv
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