Flux-tunable supercurrent in full-shell nanowire Josephson junctions

Full-shell nanowires formed by a semiconducting core fully wrapped by an epitaxial superconducting shell, have recently been introduced as promising hybrid quantum devices. Despite this, however, their properties when forming a Josephson junction (JJ) have not been elucidated yet. We here fill this...

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Detalles Bibliográficos
Autores: Giavaras, G., Aguado, Ramón
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2024
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/383626
Acceso en línea:http://hdl.handle.net/10261/383626
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85182391750&doi=10.1103%2fPhysRevB.109.024509&partnerID=40&md5=76e291e2bc921eb3c4cee54530b382a5
Access Level:acceso abierto
Palabra clave:Critical current
Josephson effect
Josephson junctions
Nanowires
Bogoliubov-de Gennes equations
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spelling Flux-tunable supercurrent in full-shell nanowire Josephson junctionsGiavaras, G.Aguado, RamónCritical currentJosephson effectJosephson junctionsNanowiresBogoliubov-de Gennes equationsFull-shell nanowires formed by a semiconducting core fully wrapped by an epitaxial superconducting shell, have recently been introduced as promising hybrid quantum devices. Despite this, however, their properties when forming a Josephson junction (JJ) have not been elucidated yet. We here fill this void by theoretically studying the physics of JJs based on full-shell nanowires. In the hollow-core limit, where the thickness of the semiconducting layer can be ignored, we demonstrate that the critical supercurrent Ic can be tuned by an external magnetic flux φ. Specifically, Ic(φ) does not follow the Little-Parks modulation of the superconducting pairing Δ(φ) and exhibits steps for realistic values of nanowire radii. The position of the steps can be understood from the underlying symmetries of the orbital transverse channels contributing to the supercurrent. © 2024 American Physical Society.Peer reviewedAmerican Physical SocietyConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202520252024info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/383626https://www.scopus.com/inward/record.uri?eid=2-s2.0-85182391750&doi=10.1103%2fPhysRevB.109.024509&partnerID=40&md5=76e291e2bc921eb3c4cee54530b382a5reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésPhysical Review Bhttps://doi.org/10.1103/PhysRevB.109.024509Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3836262026-05-22T06:33:51Z
dc.title.none.fl_str_mv Flux-tunable supercurrent in full-shell nanowire Josephson junctions
title Flux-tunable supercurrent in full-shell nanowire Josephson junctions
spellingShingle Flux-tunable supercurrent in full-shell nanowire Josephson junctions
Giavaras, G.
Critical current
Josephson effect
Josephson junctions
Nanowires
Bogoliubov-de Gennes equations
title_short Flux-tunable supercurrent in full-shell nanowire Josephson junctions
title_full Flux-tunable supercurrent in full-shell nanowire Josephson junctions
title_fullStr Flux-tunable supercurrent in full-shell nanowire Josephson junctions
title_full_unstemmed Flux-tunable supercurrent in full-shell nanowire Josephson junctions
title_sort Flux-tunable supercurrent in full-shell nanowire Josephson junctions
dc.creator.none.fl_str_mv Giavaras, G.
Aguado, Ramón
author Giavaras, G.
author_facet Giavaras, G.
Aguado, Ramón
author_role author
author2 Aguado, Ramón
author2_role author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Critical current
Josephson effect
Josephson junctions
Nanowires
Bogoliubov-de Gennes equations
topic Critical current
Josephson effect
Josephson junctions
Nanowires
Bogoliubov-de Gennes equations
description Full-shell nanowires formed by a semiconducting core fully wrapped by an epitaxial superconducting shell, have recently been introduced as promising hybrid quantum devices. Despite this, however, their properties when forming a Josephson junction (JJ) have not been elucidated yet. We here fill this void by theoretically studying the physics of JJs based on full-shell nanowires. In the hollow-core limit, where the thickness of the semiconducting layer can be ignored, we demonstrate that the critical supercurrent Ic can be tuned by an external magnetic flux φ. Specifically, Ic(φ) does not follow the Little-Parks modulation of the superconducting pairing Δ(φ) and exhibits steps for realistic values of nanowire radii. The position of the steps can be understood from the underlying symmetries of the orbital transverse channels contributing to the supercurrent. © 2024 American Physical Society.
publishDate 2024
dc.date.none.fl_str_mv 2024
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/383626
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85182391750&doi=10.1103%2fPhysRevB.109.024509&partnerID=40&md5=76e291e2bc921eb3c4cee54530b382a5
url http://hdl.handle.net/10261/383626
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85182391750&doi=10.1103%2fPhysRevB.109.024509&partnerID=40&md5=76e291e2bc921eb3c4cee54530b382a5
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Physical Review B
https://doi.org/10.1103/PhysRevB.109.024509
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.81155

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