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...
| Autores: | , |
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| 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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oai:digital.csic.es:10261/383626 |
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Flux-tunable supercurrent in full-shell nanowire Josephson junctions Giavaras, G. Aguado, Ramón Critical current Josephson effect Josephson junctions Nanowires Bogoliubov-de Gennes equations 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. Peer reviewed American Physical Society 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 |
| 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 |
| author |
Giavaras, G. |
| author_facet |
Giavaras, G. Aguado, Ramón |
| author_role |
author |
| author2 |
Aguado, Ramón |
| author2_role |
author |
| topic |
Critical current Josephson effect Josephson junctions Nanowires Bogoliubov-de Gennes equations |
| topic_facet |
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 |
| format |
article |
| status_str |
publishedVersion |
| 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 |
| eu_rights_str_mv |
openAccess |
| publisher |
American Physical Society |
| institution |
Consejo Superior de Investigaciones Científicas (CSIC) |
| collection |
DIGITAL.CSIC. Repositorio Institucional del CSIC |
| reponame_str |
DIGITAL.CSIC. Repositorio Institucional del CSIC |
| instname_str |
Consejo Superior de Investigaciones Científicas (CSIC) |
| _version_ |
1878433515857510400 |
| publishDateSort |
2024 |
| author_browse |
Aguado, Ramón Giavaras, G. |
| publisherStr |
American Physical Society |
| score |
6,924472 |