Odd-frequency pairing in josephson junctions coupled by magnetic textures

Josephson junctions (JJs) coupled through magnetic textures provide a controllable platform for odd-frequency superconductivityand Majorana physics. Within a tight-binding Green function framework, induced pair correlations and spectral propertiesare analyzed under various magnetic and geometric con...

Full description

Bibliographic Details
Authors: Sardinero, Ignacio, Cayao, Jorge, Seoane Souto, Rubén, Burset Atienza, Pablo
Format: article
Publication Date:2026
Country:España
Institution:Universidad Autónoma de Madrid
Repository:Biblos-e Archivo. Repositorio Institucional de la UAM
Language:English
OAI Identifier:oai:repositorio.uam.es:10486/743080
Online Access:https://hdl.handle.net/10486/743080
https://dx.doi.org/10.1002/pssr.202500413
Access Level:Open access
Keyword:josephson junctions
odd-frequency superconductivity
majorana bound states
topological superconductors
Física
id ES_8f7e485fe2fccb8f896ca7daaf0aff40
oai_identifier_str oai:repositorio.uam.es:10486/743080
network_acronym_str ES
network_name_str España
repository_id_str
spelling Odd-frequency pairing in josephson junctions coupled by magnetic texturesSardinero, IgnacioCayao, JorgeSeoane Souto, RubénBurset Atienza, Pablojosephson junctionsodd-frequency superconductivitymajorana bound statestopological superconductorsFísicaJosephson junctions (JJs) coupled through magnetic textures provide a controllable platform for odd-frequency superconductivityand Majorana physics. Within a tight-binding Green function framework, induced pair correlations and spectral propertiesare analyzed under various magnetic and geometric conditions. When the junction is in the topologically trivial regime, even-frequency singlet pairing is dominant, whereas the topological phase is characterized by the coexistence of Majorana bound statesand robust odd-frequency equal-spin triplet pairing at the interface edges. The odd-frequency polarized triplets reveal a divergent1=ω behavior when the Majorana states are decoupled, which is intrinsically connected to their self-conjugation property. Thezero-frequency divergence evolves into shifted resonances and linear low-frequency behavior once hybridization occurs. A non-magnetic interruption in the texture separates the topological superconductor into two topological segments and generates addi-tional inner Majorana modes. When the nonmagnetic barrier is comparable to the inner Majorana states localization length, theyhybridize and modify their associated odd-frequency triplet pairing, while the outer edge modes preserve their self-conjugatednature. Tuning the superconducting phase difference further controls the onset of the topological regime and the stability oflocalized Majorana states. The results highlight the central role of odd-frequency triplet correlations as a probe of topologicalsuperconductivity in magnetically engineered JJsThis study was supported by Comunidad de Madrid (2019-T1/IND-14088,2023-5A/IND-28927, and 2022-T1/IND-24070), Agencia Estatal deInvestigación (PID2020-117992GA-I00, PID2024-157821NB-I00, CNS2022-135950, and PID2022-140552NA-I00), Ministerio de Ciencia e Innovación(CEX2023-001316-M, CEX2024-001445-S), and Vetenskapsrådet (2021-04121WileyDepartamento de Física Teórica de la Materia CondensadaFacultad de CienciasGobierno de España20262026-01-29research articlehttp://purl.org/coar/resource_type/c_2df8fbb1VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/10486/743080https://dx.doi.org/10.1002/pssr.202500413reponame:Biblos-e Archivo. Repositorio Institucional de la UAMinstname:Universidad Autónoma de MadridInglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:repositorio.uam.es:10486/7430802026-06-23T12:46:27Z
dc.title.none.fl_str_mv Odd-frequency pairing in josephson junctions coupled by magnetic textures
title Odd-frequency pairing in josephson junctions coupled by magnetic textures
spellingShingle Odd-frequency pairing in josephson junctions coupled by magnetic textures
Sardinero, Ignacio
josephson junctions
odd-frequency superconductivity
majorana bound states
topological superconductors
Física
title_short Odd-frequency pairing in josephson junctions coupled by magnetic textures
title_full Odd-frequency pairing in josephson junctions coupled by magnetic textures
title_fullStr Odd-frequency pairing in josephson junctions coupled by magnetic textures
title_full_unstemmed Odd-frequency pairing in josephson junctions coupled by magnetic textures
title_sort Odd-frequency pairing in josephson junctions coupled by magnetic textures
dc.creator.none.fl_str_mv Sardinero, Ignacio
Cayao, Jorge
Seoane Souto, Rubén
Burset Atienza, Pablo
author Sardinero, Ignacio
author_facet Sardinero, Ignacio
Cayao, Jorge
Seoane Souto, Rubén
Burset Atienza, Pablo
author_role author
author2 Cayao, Jorge
Seoane Souto, Rubén
Burset Atienza, Pablo
author2_role author
author
author
dc.contributor.none.fl_str_mv Departamento de Física Teórica de la Materia Condensada
Facultad de Ciencias
Gobierno de España
dc.subject.none.fl_str_mv josephson junctions
odd-frequency superconductivity
majorana bound states
topological superconductors
Física
topic josephson junctions
odd-frequency superconductivity
majorana bound states
topological superconductors
Física
description Josephson junctions (JJs) coupled through magnetic textures provide a controllable platform for odd-frequency superconductivityand Majorana physics. Within a tight-binding Green function framework, induced pair correlations and spectral propertiesare analyzed under various magnetic and geometric conditions. When the junction is in the topologically trivial regime, even-frequency singlet pairing is dominant, whereas the topological phase is characterized by the coexistence of Majorana bound statesand robust odd-frequency equal-spin triplet pairing at the interface edges. The odd-frequency polarized triplets reveal a divergent1=ω behavior when the Majorana states are decoupled, which is intrinsically connected to their self-conjugation property. Thezero-frequency divergence evolves into shifted resonances and linear low-frequency behavior once hybridization occurs. A non-magnetic interruption in the texture separates the topological superconductor into two topological segments and generates addi-tional inner Majorana modes. When the nonmagnetic barrier is comparable to the inner Majorana states localization length, theyhybridize and modify their associated odd-frequency triplet pairing, while the outer edge modes preserve their self-conjugatednature. Tuning the superconducting phase difference further controls the onset of the topological regime and the stability oflocalized Majorana states. The results highlight the central role of odd-frequency triplet correlations as a probe of topologicalsuperconductivity in magnetically engineered JJs
publishDate 2026
dc.date.none.fl_str_mv 2026
2026-01-29
dc.type.none.fl_str_mv research article
http://purl.org/coar/resource_type/c_2df8fbb1
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/10486/743080
https://dx.doi.org/10.1002/pssr.202500413
url https://hdl.handle.net/10486/743080
https://dx.doi.org/10.1002/pssr.202500413
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Wiley
publisher.none.fl_str_mv Wiley
dc.source.none.fl_str_mv reponame:Biblos-e Archivo. Repositorio Institucional de la UAM
instname:Universidad Autónoma de Madrid
instname_str Universidad Autónoma de Madrid
reponame_str Biblos-e Archivo. Repositorio Institucional de la UAM
collection Biblos-e Archivo. Repositorio Institucional de la UAM
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869413216637943808
score 15,81155

Similar Items