Generalized Anderson's theorem for superconductors derived from topological insulators

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Autor(es): dc.contributorUniv Cologne-
Autor(es): dc.contributorMax Planck Inst Phys Komplexer Syst-
Autor(es): dc.contributorICTP SAIFR-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.creatorAndersen, Lionel-
Autor(es): dc.creatorRamires, Aline [UNESP]-
Autor(es): dc.creatorWang, Zhiwei-
Autor(es): dc.creatorLorenz, Thomas-
Autor(es): dc.creatorAndo, Yoichi-
Data de aceite: dc.date.accessioned2022-02-22T00:10:07Z-
Data de disponibilização: dc.date.available2022-02-22T00:10:07Z-
Data de envio: dc.date.issued2020-12-09-
Data de envio: dc.date.issued2020-12-09-
Data de envio: dc.date.issued2020-01-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1126/sciadv.aay6502-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/196668-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/196668-
Descrição: dc.descriptionA well-known result in unconventional superconductivity is the fragility of nodal superconductors against nonmagnetic impurities. Despite this common wisdom, Bi2Se3 -based topological superconductors have recently displayed unusual robustness against disorder. Here, we provide a theoretical framework that naturally explains what protects Cooper pairs from strong scattering in complex superconductors. Our analysis is based on the concept of superconducting fitness and generalizes the famous Anderson's theorem into superconductors having multiple internal degrees of freedom with simple assumptions such as the Born approximation. For concreteness, we report on the extreme example of the Cu-x(PbSe)(5)(BiSe3)(6) superconductor. Thermal conductivity measurements down to 50 mK not only give unambiguous evidence for the existence of nodes but also reveal that the energy scale corresponding to the scattering rate is orders of magnitude larger than the superconducting energy gap. This provides the most spectacular case of the generalized Anderson's theorem protecting a nodal superconductor.-
Descrição: dc.descriptionDeutsche Forschungsgemeinschaft (DFG; German Research Foundation)-
Descrição: dc.descriptionDeutsche Forschungsgemeinschaft (DFG; German Research Foundation) under Germany's Excellence Strategy-Cluster of Excellence Matter and Light for Quantum Computing (ML4Q)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionFundação para o Desenvolvimento da UNESP (FUNDUNESP)-
Descrição: dc.descriptionUniv Cologne, Phys Inst 2, D-50937 Cologne, Germany-
Descrição: dc.descriptionMax Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany-
Descrição: dc.descriptionICTP SAIFR, BR-01140070 Sao Paulo, SP, Brazil-
Descrição: dc.descriptionUniv Estadual Paulista, Inst Fis Teor, BR-01140070 Sao Paulo, SP, Brazil-
Descrição: dc.descriptionUniv Estadual Paulista, Inst Fis Teor, BR-01140070 Sao Paulo, SP, Brazil-
Descrição: dc.descriptionDeutsche Forschungsgemeinschaft (DFG; German Research Foundation): CRC 1238-277146847-
Descrição: dc.descriptionDeutsche Forschungsgemeinschaft (DFG; German Research Foundation) under Germany's Excellence Strategy-Cluster of Excellence Matter and Light for Quantum Computing (ML4Q): EXC 2004/1-390534769-
Descrição: dc.descriptionFAPESP: 2018/18287-8-
Descrição: dc.descriptionFUNDUNESP: 2338/2014-CCP-
Descrição: dc.descriptionFAPESP: 2016/01343-7-
Formato: dc.format7-
Idioma: dc.languageen-
Publicador: dc.publisherAmer Assoc Advancement Science-
Relação: dc.relationScience Advances-
???dc.source???: dc.sourceWeb of Science-
Título: dc.titleGeneralized Anderson's theorem for superconductors derived from topological insulators-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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