Isolating Majorana fermions with finite Kitaev nanowires and temperature: Universality of the zero-bias conductance
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1103/PhysRevB.96.045135 http://hdl.handle.net/11449/174970 |
Resumo: | The zero-bias peak (ZBP) is understood as the definite signature of a Majorana bound state (MBS) when attached to a semi-infinite Kitaev nanowire (KNW) nearby zero temperature. However, such characteristics concerning the realization of the KNW constitute a profound experimental challenge. We explore theoretically a QD connected to a topological KNW of finite size at nonzero temperatures and show that overlapped MBSs of the wire edges can become effectively decoupled from each other and the characteristic ZBP can be fully recovered if one tunes the system into the leaked Majorana fermion fixed point. At very low temperatures, the MBSs become strongly coupled. We derive universal features of the conductance as a function of the temperature and the relevant crossover temperatures. Our findings offer additional guides to identify signatures of MBSs in solid state setups. |
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Isolating Majorana fermions with finite Kitaev nanowires and temperature: Universality of the zero-bias conductanceThe zero-bias peak (ZBP) is understood as the definite signature of a Majorana bound state (MBS) when attached to a semi-infinite Kitaev nanowire (KNW) nearby zero temperature. However, such characteristics concerning the realization of the KNW constitute a profound experimental challenge. We explore theoretically a QD connected to a topological KNW of finite size at nonzero temperatures and show that overlapped MBSs of the wire edges can become effectively decoupled from each other and the characteristic ZBP can be fully recovered if one tunes the system into the leaked Majorana fermion fixed point. At very low temperatures, the MBSs become strongly coupled. We derive universal features of the conductance as a function of the temperature and the relevant crossover temperatures. Our findings offer additional guides to identify signatures of MBSs in solid state setups.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Departamento de Física Universidade Federal de São Carlos, Rodovia Washington Luiz, km 235, Caixa Postal 676Departamento de Física e Química Unesp - Univ Estadual PaulistaInstituto de Geociências e Ciências Exatas - IGCe Universidade Estadual Paulista Departamento de FísicaDepartamento de Física e Química Unesp - Univ Estadual PaulistaInstituto de Geociências e Ciências Exatas - IGCe Universidade Estadual Paulista Departamento de FísicaFAPESP: 2015/23539-8CNPq: 307573/2015-0Universidade Federal de São Carlos (UFSCar)Universidade Estadual Paulista (Unesp)Campo, V. L.Ricco, L. S. [UNESP]Seridonio, A. C. [UNESP]2018-12-11T17:13:40Z2018-12-11T17:13:40Z2017-07-24info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.1103/PhysRevB.96.045135Physical Review B, v. 96, n. 4, 2017.2469-99692469-9950http://hdl.handle.net/11449/17497010.1103/PhysRevB.96.0451352-s2.0-850264240122-s2.0-85026424012.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPhysical Review Binfo:eu-repo/semantics/openAccess2023-11-08T06:08:34Zoai:repositorio.unesp.br:11449/174970Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:08:20.913265Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Isolating Majorana fermions with finite Kitaev nanowires and temperature: Universality of the zero-bias conductance |
title |
Isolating Majorana fermions with finite Kitaev nanowires and temperature: Universality of the zero-bias conductance |
spellingShingle |
Isolating Majorana fermions with finite Kitaev nanowires and temperature: Universality of the zero-bias conductance Campo, V. L. |
title_short |
Isolating Majorana fermions with finite Kitaev nanowires and temperature: Universality of the zero-bias conductance |
title_full |
Isolating Majorana fermions with finite Kitaev nanowires and temperature: Universality of the zero-bias conductance |
title_fullStr |
Isolating Majorana fermions with finite Kitaev nanowires and temperature: Universality of the zero-bias conductance |
title_full_unstemmed |
Isolating Majorana fermions with finite Kitaev nanowires and temperature: Universality of the zero-bias conductance |
title_sort |
Isolating Majorana fermions with finite Kitaev nanowires and temperature: Universality of the zero-bias conductance |
author |
Campo, V. L. |
author_facet |
Campo, V. L. Ricco, L. S. [UNESP] Seridonio, A. C. [UNESP] |
author_role |
author |
author2 |
Ricco, L. S. [UNESP] Seridonio, A. C. [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 |
Campo, V. L. Ricco, L. S. [UNESP] Seridonio, A. C. [UNESP] |
description |
The zero-bias peak (ZBP) is understood as the definite signature of a Majorana bound state (MBS) when attached to a semi-infinite Kitaev nanowire (KNW) nearby zero temperature. However, such characteristics concerning the realization of the KNW constitute a profound experimental challenge. We explore theoretically a QD connected to a topological KNW of finite size at nonzero temperatures and show that overlapped MBSs of the wire edges can become effectively decoupled from each other and the characteristic ZBP can be fully recovered if one tunes the system into the leaked Majorana fermion fixed point. At very low temperatures, the MBSs become strongly coupled. We derive universal features of the conductance as a function of the temperature and the relevant crossover temperatures. Our findings offer additional guides to identify signatures of MBSs in solid state setups. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-07-24 2018-12-11T17:13:40Z 2018-12-11T17:13:40Z |
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/10.1103/PhysRevB.96.045135 Physical Review B, v. 96, n. 4, 2017. 2469-9969 2469-9950 http://hdl.handle.net/11449/174970 10.1103/PhysRevB.96.045135 2-s2.0-85026424012 2-s2.0-85026424012.pdf |
url |
http://dx.doi.org/10.1103/PhysRevB.96.045135 http://hdl.handle.net/11449/174970 |
identifier_str_mv |
Physical Review B, v. 96, n. 4, 2017. 2469-9969 2469-9950 10.1103/PhysRevB.96.045135 2-s2.0-85026424012 2-s2.0-85026424012.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Physical Review B |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
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_ |
1808128760715673600 |