Superconductivity as a probe of magnetic switching and ferromagnetic stability in Nb/Ni multilayers

The temperature and field dependences of the AC and DC magnetic moment of superconducting and ferromagnetic Nb/Ni multilayers were measured using a SQUID magnetometer with magnetic field applied parallel to the multilayer plane. Periodic kinks in the superconducting upper critical field are evidence...

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Detalles Bibliográficos
Autores: De Long, LE, Kryukov, S. A., Bosomtwi, A., Xu, WT, González Herrera, Elvira María, Navarro Palma, Elena, Villegas, J. E., Vicent López, José Luis, Yu, Ct, Pechan, MJ
Tipo de recurso: artículo
Fecha de publicación:2006
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/52128
Acceso en línea:https://hdl.handle.net/20.500.14352/52128
Access Level:acceso abierto
Palabra clave:538.9
Layered superconductors
Surface-barrier
Flux lattices
Thin-films
Superlattices
Temperature
Transition
Field
Resonance
Interplay
Física de materiales
Física del estado sólido
2211 Física del Estado Sólido
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oai_identifier_str oai:docta.ucm.es:20.500.14352/52128
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network_name_str España
repository_id_str
spelling Superconductivity as a probe of magnetic switching and ferromagnetic stability in Nb/Ni multilayersDe Long, LEKryukov, S. A.Bosomtwi, A.Xu, WTGonzález Herrera, Elvira MaríaNavarro Palma, ElenaVillegas, J. E.Vicent López, José LuisYu, CtPechan, MJ538.9Layered superconductorsSurface-barrierFlux latticesThin-filmsSuperlatticesTemperatureTransitionFieldResonanceInterplayFísica de materialesFísica del estado sólido2211 Física del Estado SólidoThe temperature and field dependences of the AC and DC magnetic moment of superconducting and ferromagnetic Nb/Ni multilayers were measured using a SQUID magnetometer with magnetic field applied parallel to the multilayer plane. Periodic kinks in the superconducting upper critical field are evidence for nucleation of a hierarchy of Abrikosov vortex lattices aligned parallel to the multilayer. Small cusps in the low-field, isothermal DC magnetization are evidence that supercurrents are sensitive to extremely small changes in the Ni layer magnetization. Smooth ferromagnetic hysteresis is observed in the normal state, but is supplanted below the superconducting transition by two reproducible discontinuities that indicate magnetic switching of the Ni layers is tightly coupled to the supercurrents. The discontinuities are attributed to the non-dipole character of the moment near switching fields and, therefore, cannot be analyzed by standard magnetometer software. Ferromagnetic resonance spectra were measured in parallel and perpendicular DC magnetic fields at room temperature and 4.2 K, and resulting data suggest that Ni layers interact magnetically in the superconducting state.Taylor & Francis LtdUniversidad Complutense de Madrid20062006-06-1120062006-06-11journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/52128reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/521282026-06-02T12:44:21Z
dc.title.none.fl_str_mv Superconductivity as a probe of magnetic switching and ferromagnetic stability in Nb/Ni multilayers
title Superconductivity as a probe of magnetic switching and ferromagnetic stability in Nb/Ni multilayers
spellingShingle Superconductivity as a probe of magnetic switching and ferromagnetic stability in Nb/Ni multilayers
De Long, LE
538.9
Layered superconductors
Surface-barrier
Flux lattices
Thin-films
Superlattices
Temperature
Transition
Field
Resonance
Interplay
Física de materiales
Física del estado sólido
2211 Física del Estado Sólido
title_short Superconductivity as a probe of magnetic switching and ferromagnetic stability in Nb/Ni multilayers
title_full Superconductivity as a probe of magnetic switching and ferromagnetic stability in Nb/Ni multilayers
title_fullStr Superconductivity as a probe of magnetic switching and ferromagnetic stability in Nb/Ni multilayers
title_full_unstemmed Superconductivity as a probe of magnetic switching and ferromagnetic stability in Nb/Ni multilayers
title_sort Superconductivity as a probe of magnetic switching and ferromagnetic stability in Nb/Ni multilayers
dc.creator.none.fl_str_mv De Long, LE
Kryukov, S. A.
Bosomtwi, A.
Xu, WT
González Herrera, Elvira María
Navarro Palma, Elena
Villegas, J. E.
Vicent López, José Luis
Yu, Ct
Pechan, MJ
author De Long, LE
author_facet De Long, LE
Kryukov, S. A.
Bosomtwi, A.
Xu, WT
González Herrera, Elvira María
Navarro Palma, Elena
Villegas, J. E.
Vicent López, José Luis
Yu, Ct
Pechan, MJ
author_role author
author2 Kryukov, S. A.
Bosomtwi, A.
Xu, WT
González Herrera, Elvira María
Navarro Palma, Elena
Villegas, J. E.
Vicent López, José Luis
Yu, Ct
Pechan, MJ
author2_role author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 538.9
Layered superconductors
Surface-barrier
Flux lattices
Thin-films
Superlattices
Temperature
Transition
Field
Resonance
Interplay
Física de materiales
Física del estado sólido
2211 Física del Estado Sólido
topic 538.9
Layered superconductors
Surface-barrier
Flux lattices
Thin-films
Superlattices
Temperature
Transition
Field
Resonance
Interplay
Física de materiales
Física del estado sólido
2211 Física del Estado Sólido
description The temperature and field dependences of the AC and DC magnetic moment of superconducting and ferromagnetic Nb/Ni multilayers were measured using a SQUID magnetometer with magnetic field applied parallel to the multilayer plane. Periodic kinks in the superconducting upper critical field are evidence for nucleation of a hierarchy of Abrikosov vortex lattices aligned parallel to the multilayer. Small cusps in the low-field, isothermal DC magnetization are evidence that supercurrents are sensitive to extremely small changes in the Ni layer magnetization. Smooth ferromagnetic hysteresis is observed in the normal state, but is supplanted below the superconducting transition by two reproducible discontinuities that indicate magnetic switching of the Ni layers is tightly coupled to the supercurrents. The discontinuities are attributed to the non-dipole character of the moment near switching fields and, therefore, cannot be analyzed by standard magnetometer software. Ferromagnetic resonance spectra were measured in parallel and perpendicular DC magnetic fields at room temperature and 4.2 K, and resulting data suggest that Ni layers interact magnetically in the superconducting state.
publishDate 2006
dc.date.none.fl_str_mv 2006
2006-06-11
2006
2006-06-11
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/52128
url https://hdl.handle.net/20.500.14352/52128
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
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
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Taylor & Francis Ltd
publisher.none.fl_str_mv Taylor & Francis Ltd
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869408740919214081
score 15,300724

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