Influence of deformations on the reentrant conductance feature in semiconducting nanowires
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.physleta.2021.127879 http://hdl.handle.net/11449/230017 |
Resumo: | Helical states can be measured through the observation of the reentrant behavior, which is a dip in the conductance probed in semiconducting nanowires (NWs) with strong spin-orbit coupling (SOC) under the presence of an external perpendicular magnetic field. We investigate the effects of deformation in the electronic transport in NWs considering the coupling between different transverse modes. Within this approach, we show that the dip in the conductance is affected by the presence of a local constriction in the NW. Moreover, we find that the reentrant feature in the conductance can appear in NWs containing a local expansion of its radius, even in the absence of SOC and magnetic field. This result demonstrates that the reentrant feature can be found within certain conditions that differ from those expected to probe helical states. Therefore, the reentrant feature cannot always be associated with the observation of helical states. Furthermore, we develop a numerical approach to calculate transport properties, which can include the deformation and the coupling among several scattering channels. |
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Repositório Institucional da UNESP |
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Influence of deformations on the reentrant conductance feature in semiconducting nanowiresDeformationsHelical statesMajorana bound statesNanowiresReentrant featureSpin-orbitHelical states can be measured through the observation of the reentrant behavior, which is a dip in the conductance probed in semiconducting nanowires (NWs) with strong spin-orbit coupling (SOC) under the presence of an external perpendicular magnetic field. We investigate the effects of deformation in the electronic transport in NWs considering the coupling between different transverse modes. Within this approach, we show that the dip in the conductance is affected by the presence of a local constriction in the NW. Moreover, we find that the reentrant feature in the conductance can appear in NWs containing a local expansion of its radius, even in the absence of SOC and magnetic field. This result demonstrates that the reentrant feature can be found within certain conditions that differ from those expected to probe helical states. Therefore, the reentrant feature cannot always be associated with the observation of helical states. Furthermore, we develop a numerical approach to calculate transport properties, which can include the deformation and the coupling among several scattering channels.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Departamento de Física Universidade Federal de São CarlosDepartamento de Física IGCE Universidade Estadual PaulistaDepartamento de Física IGCE Universidade Estadual PaulistaFAPESP: 2019/09624-3CNPq: 311450/2019-9Universidade Federal de São Carlos (UFSCar)Universidade Estadual Paulista (UNESP)Cunha, Iann [UNESP]Villegas-Lelovsky, Leonardo [UNESP]Castelano, Leonardo Kleber [UNESP]2022-04-29T08:37:13Z2022-04-29T08:37:13Z2022-02-28info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.physleta.2021.127879Physics Letters, Section A: General, Atomic and Solid State Physics, v. 426.0375-9601http://hdl.handle.net/11449/23001710.1016/j.physleta.2021.1278792-s2.0-85120784172Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPhysics Letters, Section A: General, Atomic and Solid State Physicsinfo:eu-repo/semantics/openAccess2022-04-29T08:37:13Zoai:repositorio.unesp.br:11449/230017Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T22:08:26.165839Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Influence of deformations on the reentrant conductance feature in semiconducting nanowires |
title |
Influence of deformations on the reentrant conductance feature in semiconducting nanowires |
spellingShingle |
Influence of deformations on the reentrant conductance feature in semiconducting nanowires Cunha, Iann [UNESP] Deformations Helical states Majorana bound states Nanowires Reentrant feature Spin-orbit |
title_short |
Influence of deformations on the reentrant conductance feature in semiconducting nanowires |
title_full |
Influence of deformations on the reentrant conductance feature in semiconducting nanowires |
title_fullStr |
Influence of deformations on the reentrant conductance feature in semiconducting nanowires |
title_full_unstemmed |
Influence of deformations on the reentrant conductance feature in semiconducting nanowires |
title_sort |
Influence of deformations on the reentrant conductance feature in semiconducting nanowires |
author |
Cunha, Iann [UNESP] |
author_facet |
Cunha, Iann [UNESP] Villegas-Lelovsky, Leonardo [UNESP] Castelano, Leonardo Kleber [UNESP] |
author_role |
author |
author2 |
Villegas-Lelovsky, Leonardo [UNESP] Castelano, Leonardo Kleber [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Federal de São Carlos (UFSCar) Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Cunha, Iann [UNESP] Villegas-Lelovsky, Leonardo [UNESP] Castelano, Leonardo Kleber [UNESP] |
dc.subject.por.fl_str_mv |
Deformations Helical states Majorana bound states Nanowires Reentrant feature Spin-orbit |
topic |
Deformations Helical states Majorana bound states Nanowires Reentrant feature Spin-orbit |
description |
Helical states can be measured through the observation of the reentrant behavior, which is a dip in the conductance probed in semiconducting nanowires (NWs) with strong spin-orbit coupling (SOC) under the presence of an external perpendicular magnetic field. We investigate the effects of deformation in the electronic transport in NWs considering the coupling between different transverse modes. Within this approach, we show that the dip in the conductance is affected by the presence of a local constriction in the NW. Moreover, we find that the reentrant feature in the conductance can appear in NWs containing a local expansion of its radius, even in the absence of SOC and magnetic field. This result demonstrates that the reentrant feature can be found within certain conditions that differ from those expected to probe helical states. Therefore, the reentrant feature cannot always be associated with the observation of helical states. Furthermore, we develop a numerical approach to calculate transport properties, which can include the deformation and the coupling among several scattering channels. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-04-29T08:37:13Z 2022-04-29T08:37:13Z 2022-02-28 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.physleta.2021.127879 Physics Letters, Section A: General, Atomic and Solid State Physics, v. 426. 0375-9601 http://hdl.handle.net/11449/230017 10.1016/j.physleta.2021.127879 2-s2.0-85120784172 |
url |
http://dx.doi.org/10.1016/j.physleta.2021.127879 http://hdl.handle.net/11449/230017 |
identifier_str_mv |
Physics Letters, Section A: General, Atomic and Solid State Physics, v. 426. 0375-9601 10.1016/j.physleta.2021.127879 2-s2.0-85120784172 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Physics Letters, Section A: General, Atomic and Solid State Physics |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129396123369472 |