Nonuniform superconducting state in an antiferromagnetic superconductor
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRN |
Texto Completo: | https://repositorio.ufrn.br/jspui/handle/123456789/28796 https://doi.org/10.1103/PhysRevB.93.014501 |
Resumo: | We consider the superconducting state in a clean crystal with antiferromagnetic (AF) structure of localized magnetic moments taking into account the exchange interaction between magnetic moments and conduction electrons. We assume that the localized moments order at the Neel temperature TN due to the RKKY interaction predominantly. In such crystals, the periodic exchange field acting on conducting electrons results in the formation of an insulating gap on the Fermi surface for electrons moving in directions that depend on the orientation of the wave vector of AF ordering. We assume a scenario in which the Cooper pairing occurs in the open parts of the Fermi surface at the temperature Tc. We show that at high amplitudes of exchange field he > Tc/μB, the structure of superconducting state just below the temperature Tc depends on the relation between Tc and TN. At low ratio Tc/TN, a nonuniform superconducting state, like the Fulde-Farrell-Larkin-Ovchinnikov high-field phase, should exist, while at bigger ratio superconducting order parameter is uniform. The nonuniform structure of superconducting state may be probed by tunneling measurements. |
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Bulaevskii, LevEneias, RonivonFerraz Filho, Álvaro2020-04-16T15:05:31Z2020-04-16T15:05:31Z2016-01-06BULAEVSKII, Lev; ENEIAS, Ronivon; FERRAZ FILHO, Álvaro. Nonuniform superconducting state in an antiferromagnetic superconductor. Physical Review B, [s.l.], v. 93, n. 1, p. 0145011-0145017, 6 jan. 2016. ISSN 2469-9950. DOI https://doi.org/10.1103/PhysRevB.93.014501. Disponível em: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.93.014501. Acesso em: 16 abr. 2020.2469-9950 (print), 2469-9969 (online)https://repositorio.ufrn.br/jspui/handle/123456789/28796https://doi.org/10.1103/PhysRevB.93.014501American Physical SocietyNão possui palavras-chaves.Nonuniform superconducting state in an antiferromagnetic superconductorinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleWe consider the superconducting state in a clean crystal with antiferromagnetic (AF) structure of localized magnetic moments taking into account the exchange interaction between magnetic moments and conduction electrons. We assume that the localized moments order at the Neel temperature TN due to the RKKY interaction predominantly. In such crystals, the periodic exchange field acting on conducting electrons results in the formation of an insulating gap on the Fermi surface for electrons moving in directions that depend on the orientation of the wave vector of AF ordering. We assume a scenario in which the Cooper pairing occurs in the open parts of the Fermi surface at the temperature Tc. We show that at high amplitudes of exchange field he > Tc/μB, the structure of superconducting state just below the temperature Tc depends on the relation between Tc and TN. At low ratio Tc/TN, a nonuniform superconducting state, like the Fulde-Farrell-Larkin-Ovchinnikov high-field phase, should exist, while at bigger ratio superconducting order parameter is uniform. The nonuniform structure of superconducting state may be probed by tunneling measurements.engreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNinfo:eu-repo/semantics/openAccessORIGINALNonuniformSuperconductingStateInAnAntiferromagneticSuperconductor_2016.pdfNonuniformSuperconductingStateInAnAntiferromagneticSuperconductor_2016.pdfArtigoapplication/pdf451746https://repositorio.ufrn.br/bitstream/123456789/28796/1/NonuniformSuperconductingStateInAnAntiferromagneticSuperconductor_2016.pdf9fed438a348bac8a5a32439ff2283010MD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81484https://repositorio.ufrn.br/bitstream/123456789/28796/2/license.txte9597aa2854d128fd968be5edc8a28d9MD52TEXTNonuniformSuperconductingStateInAnAntiferromagneticSuperconductor_2016.pdf.txtNonuniformSuperconductingStateInAnAntiferromagneticSuperconductor_2016.pdf.txtExtracted texttext/plain35407https://repositorio.ufrn.br/bitstream/123456789/28796/3/NonuniformSuperconductingStateInAnAntiferromagneticSuperconductor_2016.pdf.txt01b21f0a86d41d61fe2bdb9b3cc85d89MD53THUMBNAILNonuniformSuperconductingStateInAnAntiferromagneticSuperconductor_2016.pdf.jpgNonuniformSuperconductingStateInAnAntiferromagneticSuperconductor_2016.pdf.jpgGenerated Thumbnailimage/jpeg1762https://repositorio.ufrn.br/bitstream/123456789/28796/4/NonuniformSuperconductingStateInAnAntiferromagneticSuperconductor_2016.pdf.jpg7d82a9811ec90f4cec0b776f7c5b3430MD54123456789/287962020-05-05 00:06:01.614oai:https://repositorio.ufrn.br:123456789/28796Tk9OLUVYQ0xVU0lWRSBESVNUUklCVVRJT04gTElDRU5TRQoKCkJ5IHNpZ25pbmcgYW5kIGRlbGl2ZXJpbmcgdGhpcyBsaWNlbnNlLCBNci4gKGF1dGhvciBvciBjb3B5cmlnaHQgaG9sZGVyKToKCgphKSBHcmFudHMgdGhlIFVuaXZlcnNpZGFkZSBGZWRlcmFsIFJpbyBHcmFuZGUgZG8gTm9ydGUgdGhlIG5vbi1leGNsdXNpdmUgcmlnaHQgb2YKcmVwcm9kdWNlLCBjb252ZXJ0IChhcyBkZWZpbmVkIGJlbG93KSwgY29tbXVuaWNhdGUgYW5kIC8gb3IKZGlzdHJpYnV0ZSB0aGUgZGVsaXZlcmVkIGRvY3VtZW50IChpbmNsdWRpbmcgYWJzdHJhY3QgLyBhYnN0cmFjdCkgaW4KZGlnaXRhbCBvciBwcmludGVkIGZvcm1hdCBhbmQgaW4gYW55IG1lZGl1bS4KCmIpIERlY2xhcmVzIHRoYXQgdGhlIGRvY3VtZW50IHN1Ym1pdHRlZCBpcyBpdHMgb3JpZ2luYWwgd29yaywgYW5kIHRoYXQKeW91IGhhdmUgdGhlIHJpZ2h0IHRvIGdyYW50IHRoZSByaWdodHMgY29udGFpbmVkIGluIHRoaXMgbGljZW5zZS4gRGVjbGFyZXMKdGhhdCB0aGUgZGVsaXZlcnkgb2YgdGhlIGRvY3VtZW50IGRvZXMgbm90IGluZnJpbmdlLCBhcyBmYXIgYXMgaXQgaXMKdGhlIHJpZ2h0cyBvZiBhbnkgb3RoZXIgcGVyc29uIG9yIGVudGl0eS4KCmMpIElmIHRoZSBkb2N1bWVudCBkZWxpdmVyZWQgY29udGFpbnMgbWF0ZXJpYWwgd2hpY2ggZG9lcyBub3QKcmlnaHRzLCBkZWNsYXJlcyB0aGF0IGl0IGhhcyBvYnRhaW5lZCBhdXRob3JpemF0aW9uIGZyb20gdGhlIGhvbGRlciBvZiB0aGUKY29weXJpZ2h0IHRvIGdyYW50IHRoZSBVbml2ZXJzaWRhZGUgRmVkZXJhbCBkbyBSaW8gR3JhbmRlIGRvIE5vcnRlIHRoZSByaWdodHMgcmVxdWlyZWQgYnkgdGhpcyBsaWNlbnNlLCBhbmQgdGhhdCB0aGlzIG1hdGVyaWFsIHdob3NlIHJpZ2h0cyBhcmUgb2YKdGhpcmQgcGFydGllcyBpcyBjbGVhcmx5IGlkZW50aWZpZWQgYW5kIHJlY29nbml6ZWQgaW4gdGhlIHRleHQgb3IKY29udGVudCBvZiB0aGUgZG9jdW1lbnQgZGVsaXZlcmVkLgoKSWYgdGhlIGRvY3VtZW50IHN1Ym1pdHRlZCBpcyBiYXNlZCBvbiBmdW5kZWQgb3Igc3VwcG9ydGVkIHdvcmsKYnkgYW5vdGhlciBpbnN0aXR1dGlvbiBvdGhlciB0aGFuIHRoZSBVbml2ZXJzaWRhZGUgRmVkZXJhbCBkbyBSaW8gR3JhbmRlIGRvIE5vcnRlLCBkZWNsYXJlcyB0aGF0IGl0IGhhcyBmdWxmaWxsZWQgYW55IG9ibGlnYXRpb25zIHJlcXVpcmVkIGJ5IHRoZSByZXNwZWN0aXZlIGFncmVlbWVudCBvciBhZ3JlZW1lbnQuCgpUaGUgVW5pdmVyc2lkYWRlIEZlZGVyYWwgZG8gUmlvIEdyYW5kZSBkbyBOb3J0ZSB3aWxsIGNsZWFybHkgaWRlbnRpZnkgaXRzIG5hbWUgKHMpIGFzIHRoZSBhdXRob3IgKHMpIG9yIGhvbGRlciAocykgb2YgdGhlIGRvY3VtZW50J3MgcmlnaHRzCmRlbGl2ZXJlZCwgYW5kIHdpbGwgbm90IG1ha2UgYW55IGNoYW5nZXMsIG90aGVyIHRoYW4gdGhvc2UgcGVybWl0dGVkIGJ5CnRoaXMgbGljZW5zZQo=Repositório de PublicaçõesPUBhttp://repositorio.ufrn.br/oai/opendoar:2020-05-05T03:06:01Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false |
dc.title.pt_BR.fl_str_mv |
Nonuniform superconducting state in an antiferromagnetic superconductor |
title |
Nonuniform superconducting state in an antiferromagnetic superconductor |
spellingShingle |
Nonuniform superconducting state in an antiferromagnetic superconductor Bulaevskii, Lev Não possui palavras-chaves. |
title_short |
Nonuniform superconducting state in an antiferromagnetic superconductor |
title_full |
Nonuniform superconducting state in an antiferromagnetic superconductor |
title_fullStr |
Nonuniform superconducting state in an antiferromagnetic superconductor |
title_full_unstemmed |
Nonuniform superconducting state in an antiferromagnetic superconductor |
title_sort |
Nonuniform superconducting state in an antiferromagnetic superconductor |
author |
Bulaevskii, Lev |
author_facet |
Bulaevskii, Lev Eneias, Ronivon Ferraz Filho, Álvaro |
author_role |
author |
author2 |
Eneias, Ronivon Ferraz Filho, Álvaro |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Bulaevskii, Lev Eneias, Ronivon Ferraz Filho, Álvaro |
dc.subject.por.fl_str_mv |
Não possui palavras-chaves. |
topic |
Não possui palavras-chaves. |
description |
We consider the superconducting state in a clean crystal with antiferromagnetic (AF) structure of localized magnetic moments taking into account the exchange interaction between magnetic moments and conduction electrons. We assume that the localized moments order at the Neel temperature TN due to the RKKY interaction predominantly. In such crystals, the periodic exchange field acting on conducting electrons results in the formation of an insulating gap on the Fermi surface for electrons moving in directions that depend on the orientation of the wave vector of AF ordering. We assume a scenario in which the Cooper pairing occurs in the open parts of the Fermi surface at the temperature Tc. We show that at high amplitudes of exchange field he > Tc/μB, the structure of superconducting state just below the temperature Tc depends on the relation between Tc and TN. At low ratio Tc/TN, a nonuniform superconducting state, like the Fulde-Farrell-Larkin-Ovchinnikov high-field phase, should exist, while at bigger ratio superconducting order parameter is uniform. The nonuniform structure of superconducting state may be probed by tunneling measurements. |
publishDate |
2016 |
dc.date.issued.fl_str_mv |
2016-01-06 |
dc.date.accessioned.fl_str_mv |
2020-04-16T15:05:31Z |
dc.date.available.fl_str_mv |
2020-04-16T15:05:31Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
BULAEVSKII, Lev; ENEIAS, Ronivon; FERRAZ FILHO, Álvaro. Nonuniform superconducting state in an antiferromagnetic superconductor. Physical Review B, [s.l.], v. 93, n. 1, p. 0145011-0145017, 6 jan. 2016. ISSN 2469-9950. DOI https://doi.org/10.1103/PhysRevB.93.014501. Disponível em: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.93.014501. Acesso em: 16 abr. 2020. |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufrn.br/jspui/handle/123456789/28796 |
dc.identifier.issn.none.fl_str_mv |
2469-9950 (print), 2469-9969 (online) |
dc.identifier.doi.none.fl_str_mv |
https://doi.org/10.1103/PhysRevB.93.014501 |
identifier_str_mv |
BULAEVSKII, Lev; ENEIAS, Ronivon; FERRAZ FILHO, Álvaro. Nonuniform superconducting state in an antiferromagnetic superconductor. Physical Review B, [s.l.], v. 93, n. 1, p. 0145011-0145017, 6 jan. 2016. ISSN 2469-9950. DOI https://doi.org/10.1103/PhysRevB.93.014501. Disponível em: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.93.014501. Acesso em: 16 abr. 2020. 2469-9950 (print), 2469-9969 (online) |
url |
https://repositorio.ufrn.br/jspui/handle/123456789/28796 https://doi.org/10.1103/PhysRevB.93.014501 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.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:Repositório Institucional da UFRN instname:Universidade Federal do Rio Grande do Norte (UFRN) instacron:UFRN |
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Universidade Federal do Rio Grande do Norte (UFRN) |
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UFRN |
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UFRN |
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Repositório Institucional da UFRN |
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Repositório Institucional da UFRN |
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