Superconductivity in disordered locally noncentrosymmetric materials : an application to CeRh2As2
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/236815 |
Resumo: | Layered three-dimensional centrosymmetric crystals can exhibit characteristics of noncentrosymmetric mate rials. This happens when each individual layer alone lacks inversion but, when combined, inversion symmetry is restored; hence the designation locally noncentrosymmertic superconductors (LNCSs). In LNCSs, the effects of impurities and subdominant magnetic field induced pairing channels remain unexplored. Using a minimal model, we examine all pairing channels and show that there is always a subdominant superconducting instability that is favored at high magnetic fields, which can substantially alter the magnetic field–temperature phase diagram. Also, we find that the phase diagram responds to disorder in a nonmonotonic way, which can be subjected to experimental verification. We apply these ideas to the recently unveiled two-phase superconducting phase diagram of CeRh2As2. We identify the two phases as singlet-triplet mixed even- and odd-parity states at low and high-fields, respectively. Furthermore, we predict the presence of two superconducting phases also for in-plane magnetic fields in cleaner samples, since a high-field phase could have been so far hindered by impurity effects. |
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Möckli, DavidRamires, Aline2022-04-07T04:49:30Z20211098-0121http://hdl.handle.net/10183/236815001137549Layered three-dimensional centrosymmetric crystals can exhibit characteristics of noncentrosymmetric mate rials. This happens when each individual layer alone lacks inversion but, when combined, inversion symmetry is restored; hence the designation locally noncentrosymmertic superconductors (LNCSs). In LNCSs, the effects of impurities and subdominant magnetic field induced pairing channels remain unexplored. Using a minimal model, we examine all pairing channels and show that there is always a subdominant superconducting instability that is favored at high magnetic fields, which can substantially alter the magnetic field–temperature phase diagram. Also, we find that the phase diagram responds to disorder in a nonmonotonic way, which can be subjected to experimental verification. We apply these ideas to the recently unveiled two-phase superconducting phase diagram of CeRh2As2. We identify the two phases as singlet-triplet mixed even- and odd-parity states at low and high-fields, respectively. Furthermore, we predict the presence of two superconducting phases also for in-plane magnetic fields in cleaner samples, since a high-field phase could have been so far hindered by impurity effects.application/pdfengPhysical review. B, Condensed matter and materials physics. Woodbury. Vol. 104, no. 13 (Oct. 2021), 134517, 17 p.SupercondutividadeDiagramas de faseCampos magnéticosSuperconductivity in disordered locally noncentrosymmetric materials : an application to CeRh2As2Estrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001137549.pdf.txt001137549.pdf.txtExtracted Texttext/plain80276http://www.lume.ufrgs.br/bitstream/10183/236815/2/001137549.pdf.txt1938379d7ceaac14c59862bda162534fMD52ORIGINAL001137549.pdfTexto completo (inglês)application/pdf2487552http://www.lume.ufrgs.br/bitstream/10183/236815/1/001137549.pdf53ca9f8e453ad4a3c3cb5fb0b6780b44MD5110183/2368152023-05-21 03:28:18.702611oai:www.lume.ufrgs.br:10183/236815Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-05-21T06:28:18Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Superconductivity in disordered locally noncentrosymmetric materials : an application to CeRh2As2 |
title |
Superconductivity in disordered locally noncentrosymmetric materials : an application to CeRh2As2 |
spellingShingle |
Superconductivity in disordered locally noncentrosymmetric materials : an application to CeRh2As2 Möckli, David Supercondutividade Diagramas de fase Campos magnéticos |
title_short |
Superconductivity in disordered locally noncentrosymmetric materials : an application to CeRh2As2 |
title_full |
Superconductivity in disordered locally noncentrosymmetric materials : an application to CeRh2As2 |
title_fullStr |
Superconductivity in disordered locally noncentrosymmetric materials : an application to CeRh2As2 |
title_full_unstemmed |
Superconductivity in disordered locally noncentrosymmetric materials : an application to CeRh2As2 |
title_sort |
Superconductivity in disordered locally noncentrosymmetric materials : an application to CeRh2As2 |
author |
Möckli, David |
author_facet |
Möckli, David Ramires, Aline |
author_role |
author |
author2 |
Ramires, Aline |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Möckli, David Ramires, Aline |
dc.subject.por.fl_str_mv |
Supercondutividade Diagramas de fase Campos magnéticos |
topic |
Supercondutividade Diagramas de fase Campos magnéticos |
description |
Layered three-dimensional centrosymmetric crystals can exhibit characteristics of noncentrosymmetric mate rials. This happens when each individual layer alone lacks inversion but, when combined, inversion symmetry is restored; hence the designation locally noncentrosymmertic superconductors (LNCSs). In LNCSs, the effects of impurities and subdominant magnetic field induced pairing channels remain unexplored. Using a minimal model, we examine all pairing channels and show that there is always a subdominant superconducting instability that is favored at high magnetic fields, which can substantially alter the magnetic field–temperature phase diagram. Also, we find that the phase diagram responds to disorder in a nonmonotonic way, which can be subjected to experimental verification. We apply these ideas to the recently unveiled two-phase superconducting phase diagram of CeRh2As2. We identify the two phases as singlet-triplet mixed even- and odd-parity states at low and high-fields, respectively. Furthermore, we predict the presence of two superconducting phases also for in-plane magnetic fields in cleaner samples, since a high-field phase could have been so far hindered by impurity effects. |
publishDate |
2021 |
dc.date.issued.fl_str_mv |
2021 |
dc.date.accessioned.fl_str_mv |
2022-04-07T04:49:30Z |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/236815 |
dc.identifier.issn.pt_BR.fl_str_mv |
1098-0121 |
dc.identifier.nrb.pt_BR.fl_str_mv |
001137549 |
identifier_str_mv |
1098-0121 001137549 |
url |
http://hdl.handle.net/10183/236815 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Physical review. B, Condensed matter and materials physics. Woodbury. Vol. 104, no. 13 (Oct. 2021), 134517, 17 p. |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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application/pdf |
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