Superconductor-antiferromagnet-superconductor π Josephson junction based on an antiferromagnetic barrier
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRN |
Texto Completo: | https://repositorio.ufrn.br/jspui/handle/123456789/28823 https://doi.org/10.1103/PhysRevB.95.104513 |
Resumo: | We show theoretically that π Josephson junctions may be constructed by use of antiferromagnetic (AF) metals between superconducting electrodes. We argue that the AF magnetic ordering introduces the energy difference of electrons in a Cooper pair due to the effect of the exchange field varying in space. Such an energy difference is quadratic in the amplitude of exchange field and this is sufficient to change the behavior of a Josephson junction from 0 to π junction if the width of the AF metal is big enough. The advantage of using an AF barrier instead of a ferromagnetic one is that it does not suppress Cooper pairing in superconducting electrodes as much as the ferromagnet barrier does. However, to reach π -junction regime the AF metal should be a clean one with the electron mean free path bigger than the junction width. |
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Bulaevskii, LevEneias, RonivonFerraz Filho, Álvaro2020-04-20T20:14:52Z2020-04-20T20:14:52Z2017-03-20BULAEVSKII, Lev; ENEIAS, Ronivon; FERRAZ FILHO, Álvaro. Superconductor-antiferromagnet-superconductorπJosephson junction based on an antiferromagnetic barrier. Physical Review B, [s.l.], v. 95, n. 10, p. 1045131-1045135, 20 mar. 2017. ISSN 2469-9950. DOI https://doi.org/10.1103/PhysRevB.95.104513. Disponível em: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.95.104513. Acesso em: 20 abr. 2020.2469-9950 (print), 2469-9969 (online)https://repositorio.ufrn.br/jspui/handle/123456789/28823https://doi.org/10.1103/PhysRevB.95.104513We show theoretically that π Josephson junctions may be constructed by use of antiferromagnetic (AF) metals between superconducting electrodes. We argue that the AF magnetic ordering introduces the energy difference of electrons in a Cooper pair due to the effect of the exchange field varying in space. Such an energy difference is quadratic in the amplitude of exchange field and this is sufficient to change the behavior of a Josephson junction from 0 to π junction if the width of the AF metal is big enough. The advantage of using an AF barrier instead of a ferromagnetic one is that it does not suppress Cooper pairing in superconducting electrodes as much as the ferromagnet barrier does. However, to reach π -junction regime the AF metal should be a clean one with the electron mean free path bigger than the junction width.We show theoretically that π Josephson junctions may be constructed by use of antiferromagnetic (AF) metals between superconducting electrodes. We argue that the AF magnetic ordering introduces the energy difference of electrons in a Cooper pair due to the effect of the exchange field varying in space. Such an energy difference is quadratic in the amplitude of exchange field and this is sufficient to change the behavior of a Josephson junction from 0 to π junction if the width of the AF metal is big enough. The advantage of using an AF barrier instead of a ferromagnetic one is that it does not suppress Cooper pairing in superconducting electrodes as much as the ferromagnet barrier does. However, to reach π -junction regime the AF metal should be a clean one with the electron mean free path bigger than the junction width.American Physical SocietySuperconductor-antiferromagnet-superconductorJosephson junctionAntiferromagnetic barrierSuperconductor-antiferromagnet-superconductor π Josephson junction based on an antiferromagnetic barrierinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleengreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNinfo:eu-repo/semantics/openAccessORIGINALSuperconductoraAntiferromagnetSuperconductor_2017.pdfSuperconductoraAntiferromagnetSuperconductor_2017.pdfArtigoapplication/pdf316764https://repositorio.ufrn.br/bitstream/123456789/28823/1/SuperconductoraAntiferromagnetSuperconductor_2017.pdf3fe91823a5272bc346587724caae5591MD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81484https://repositorio.ufrn.br/bitstream/123456789/28823/2/license.txte9597aa2854d128fd968be5edc8a28d9MD52TEXTSuperconductoraAntiferromagnetSuperconductor_2017.pdf.txtSuperconductoraAntiferromagnetSuperconductor_2017.pdf.txtExtracted texttext/plain23229https://repositorio.ufrn.br/bitstream/123456789/28823/3/SuperconductoraAntiferromagnetSuperconductor_2017.pdf.txt2b96bde5877e861eca8676e9ff49e833MD53THUMBNAILSuperconductoraAntiferromagnetSuperconductor_2017.pdf.jpgSuperconductoraAntiferromagnetSuperconductor_2017.pdf.jpgGenerated Thumbnailimage/jpeg1770https://repositorio.ufrn.br/bitstream/123456789/28823/4/SuperconductoraAntiferromagnetSuperconductor_2017.pdf.jpg22a827aeb3b6df4eb6af108261dbcc36MD54123456789/288232020-05-05 00:04:39.782oai:https://repositorio.ufrn.br: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Repositório de PublicaçõesPUBhttp://repositorio.ufrn.br/oai/opendoar:2020-05-05T03:04:39Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false |
dc.title.pt_BR.fl_str_mv |
Superconductor-antiferromagnet-superconductor π Josephson junction based on an antiferromagnetic barrier |
title |
Superconductor-antiferromagnet-superconductor π Josephson junction based on an antiferromagnetic barrier |
spellingShingle |
Superconductor-antiferromagnet-superconductor π Josephson junction based on an antiferromagnetic barrier Bulaevskii, Lev Superconductor-antiferromagnet-superconductor Josephson junction Antiferromagnetic barrier |
title_short |
Superconductor-antiferromagnet-superconductor π Josephson junction based on an antiferromagnetic barrier |
title_full |
Superconductor-antiferromagnet-superconductor π Josephson junction based on an antiferromagnetic barrier |
title_fullStr |
Superconductor-antiferromagnet-superconductor π Josephson junction based on an antiferromagnetic barrier |
title_full_unstemmed |
Superconductor-antiferromagnet-superconductor π Josephson junction based on an antiferromagnetic barrier |
title_sort |
Superconductor-antiferromagnet-superconductor π Josephson junction based on an antiferromagnetic barrier |
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 |
Superconductor-antiferromagnet-superconductor Josephson junction Antiferromagnetic barrier |
topic |
Superconductor-antiferromagnet-superconductor Josephson junction Antiferromagnetic barrier |
description |
We show theoretically that π Josephson junctions may be constructed by use of antiferromagnetic (AF) metals between superconducting electrodes. We argue that the AF magnetic ordering introduces the energy difference of electrons in a Cooper pair due to the effect of the exchange field varying in space. Such an energy difference is quadratic in the amplitude of exchange field and this is sufficient to change the behavior of a Josephson junction from 0 to π junction if the width of the AF metal is big enough. The advantage of using an AF barrier instead of a ferromagnetic one is that it does not suppress Cooper pairing in superconducting electrodes as much as the ferromagnet barrier does. However, to reach π -junction regime the AF metal should be a clean one with the electron mean free path bigger than the junction width. |
publishDate |
2017 |
dc.date.issued.fl_str_mv |
2017-03-20 |
dc.date.accessioned.fl_str_mv |
2020-04-20T20:14:52Z |
dc.date.available.fl_str_mv |
2020-04-20T20:14:52Z |
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. Superconductor-antiferromagnet-superconductorπJosephson junction based on an antiferromagnetic barrier. Physical Review B, [s.l.], v. 95, n. 10, p. 1045131-1045135, 20 mar. 2017. ISSN 2469-9950. DOI https://doi.org/10.1103/PhysRevB.95.104513. Disponível em: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.95.104513. Acesso em: 20 abr. 2020. |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufrn.br/jspui/handle/123456789/28823 |
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.95.104513 |
identifier_str_mv |
BULAEVSKII, Lev; ENEIAS, Ronivon; FERRAZ FILHO, Álvaro. Superconductor-antiferromagnet-superconductorπJosephson junction based on an antiferromagnetic barrier. Physical Review B, [s.l.], v. 95, n. 10, p. 1045131-1045135, 20 mar. 2017. ISSN 2469-9950. DOI https://doi.org/10.1103/PhysRevB.95.104513. Disponível em: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.95.104513. Acesso em: 20 abr. 2020. 2469-9950 (print), 2469-9969 (online) |
url |
https://repositorio.ufrn.br/jspui/handle/123456789/28823 https://doi.org/10.1103/PhysRevB.95.104513 |
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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