Fractional Spin and Josephson Effect in Time-Reversal-Invariant Topological Superconductors

Autores
Camjayi, Alberto; Arrachea, Liliana del Carmen; Aligia, Armando Ángel; Von Oppen, Felix
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Time-reversal-invariant topological superconducting (TRITOPS) wires are known to host a fractional spin /4 at their ends. We investigate how this fractional spin affects the Josephson current in a TRITOPS-quantum dot-TRITOPS Josephson junction, describing the wire in a model that can be tuned between a topological and a nontopological phase. We compute the equilibrium Josephson current of the full model by continuous-time Monte Carlo simulations and interpret the results within an effective low-energy theory. We show that in the topological phase, the 0-to-π transition is quenched via formation of a spin singlet from the quantum-dot spin and the fractional spins associated with the two adjacent topological superconductors.
Fil: Camjayi, Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Fil: Arrachea, Liliana del Carmen. Universidad Nacional de San Martín; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Aligia, Armando Ángel. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Von Oppen, Felix. Dahlem Center For Complex Quantum Systems; Alemania
Materia
Joshepson
Topological
Fractionalization
Transport
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/54335
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Fractional Spin and Josephson Effect in Time-Reversal-Invariant Topological SuperconductorsCamjayi, AlbertoArrachea, Liliana del CarmenAligia, Armando ÁngelVon Oppen, FelixJoshepsonTopologicalFractionalizationTransporthttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Time-reversal-invariant topological superconducting (TRITOPS) wires are known to host a fractional spin /4 at their ends. We investigate how this fractional spin affects the Josephson current in a TRITOPS-quantum dot-TRITOPS Josephson junction, describing the wire in a model that can be tuned between a topological and a nontopological phase. We compute the equilibrium Josephson current of the full model by continuous-time Monte Carlo simulations and interpret the results within an effective low-energy theory. We show that in the topological phase, the 0-to-π transition is quenched via formation of a spin singlet from the quantum-dot spin and the fractional spins associated with the two adjacent topological superconductors.Fil: Camjayi, Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; ArgentinaFil: Arrachea, Liliana del Carmen. Universidad Nacional de San Martín; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Aligia, Armando Ángel. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Von Oppen, Felix. Dahlem Center For Complex Quantum Systems; AlemaniaAmerican Physical Society2017-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/54335Camjayi, Alberto; Arrachea, Liliana del Carmen; Aligia, Armando Ángel; Von Oppen, Felix; Fractional Spin and Josephson Effect in Time-Reversal-Invariant Topological Superconductors; American Physical Society; Physical Review Letters; 119; 4; 7-2017; 1-5; 0468010031-90071079-7114CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://link.aps.org/doi/10.1103/PhysRevLett.119.046801info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.119.046801info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:33:08Zoai:ri.conicet.gov.ar:11336/54335instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:33:08.365CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Fractional Spin and Josephson Effect in Time-Reversal-Invariant Topological Superconductors
title Fractional Spin and Josephson Effect in Time-Reversal-Invariant Topological Superconductors
spellingShingle Fractional Spin and Josephson Effect in Time-Reversal-Invariant Topological Superconductors
Camjayi, Alberto
Joshepson
Topological
Fractionalization
Transport
title_short Fractional Spin and Josephson Effect in Time-Reversal-Invariant Topological Superconductors
title_full Fractional Spin and Josephson Effect in Time-Reversal-Invariant Topological Superconductors
title_fullStr Fractional Spin and Josephson Effect in Time-Reversal-Invariant Topological Superconductors
title_full_unstemmed Fractional Spin and Josephson Effect in Time-Reversal-Invariant Topological Superconductors
title_sort Fractional Spin and Josephson Effect in Time-Reversal-Invariant Topological Superconductors
dc.creator.none.fl_str_mv Camjayi, Alberto
Arrachea, Liliana del Carmen
Aligia, Armando Ángel
Von Oppen, Felix
author Camjayi, Alberto
author_facet Camjayi, Alberto
Arrachea, Liliana del Carmen
Aligia, Armando Ángel
Von Oppen, Felix
author_role author
author2 Arrachea, Liliana del Carmen
Aligia, Armando Ángel
Von Oppen, Felix
author2_role author
author
author
dc.subject.none.fl_str_mv Joshepson
Topological
Fractionalization
Transport
topic Joshepson
Topological
Fractionalization
Transport
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Time-reversal-invariant topological superconducting (TRITOPS) wires are known to host a fractional spin /4 at their ends. We investigate how this fractional spin affects the Josephson current in a TRITOPS-quantum dot-TRITOPS Josephson junction, describing the wire in a model that can be tuned between a topological and a nontopological phase. We compute the equilibrium Josephson current of the full model by continuous-time Monte Carlo simulations and interpret the results within an effective low-energy theory. We show that in the topological phase, the 0-to-π transition is quenched via formation of a spin singlet from the quantum-dot spin and the fractional spins associated with the two adjacent topological superconductors.
Fil: Camjayi, Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Fil: Arrachea, Liliana del Carmen. Universidad Nacional de San Martín; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Aligia, Armando Ángel. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Von Oppen, Felix. Dahlem Center For Complex Quantum Systems; Alemania
description Time-reversal-invariant topological superconducting (TRITOPS) wires are known to host a fractional spin /4 at their ends. We investigate how this fractional spin affects the Josephson current in a TRITOPS-quantum dot-TRITOPS Josephson junction, describing the wire in a model that can be tuned between a topological and a nontopological phase. We compute the equilibrium Josephson current of the full model by continuous-time Monte Carlo simulations and interpret the results within an effective low-energy theory. We show that in the topological phase, the 0-to-π transition is quenched via formation of a spin singlet from the quantum-dot spin and the fractional spins associated with the two adjacent topological superconductors.
publishDate 2017
dc.date.none.fl_str_mv 2017-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/54335
Camjayi, Alberto; Arrachea, Liliana del Carmen; Aligia, Armando Ángel; Von Oppen, Felix; Fractional Spin and Josephson Effect in Time-Reversal-Invariant Topological Superconductors; American Physical Society; Physical Review Letters; 119; 4; 7-2017; 1-5; 046801
0031-9007
1079-7114
CONICET Digital
CONICET
url http://hdl.handle.net/11336/54335
identifier_str_mv Camjayi, Alberto; Arrachea, Liliana del Carmen; Aligia, Armando Ángel; Von Oppen, Felix; Fractional Spin and Josephson Effect in Time-Reversal-Invariant Topological Superconductors; American Physical Society; Physical Review Letters; 119; 4; 7-2017; 1-5; 046801
0031-9007
1079-7114
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://link.aps.org/doi/10.1103/PhysRevLett.119.046801
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.119.046801
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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