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dc.contributor.authorAvila, Jesús-
dc.contributor.authorPeñaranda, Fernando-
dc.contributor.authorPrada, Elsa-
dc.contributor.authorSan-José, Pablo-
dc.contributor.authorAguado, Ramón-
dc.date.accessioned2020-05-07T07:59:31Z-
dc.date.available2020-05-07T07:59:31Z-
dc.date.issued2019-
dc.identifierdoi: 10.1038/s42005-019-0231-8-
dc.identifiere-issn: 2399-3650-
dc.identifier.citationCommunications Physics 2 (2019)-
dc.identifier.urihttp://hdl.handle.net/10261/210677-
dc.description.abstract[EN] Zero-energy Andreev levels in hybrid semiconductor-superconductor nanowires mimic all expected Majorana phenomenology, including 2 e∕ h conductance quantisation, even where band topology predicts trivial phases. This surprising fact has been used to challenge the interpretation of various transport experiments in terms of Majorana zero modes. Here we show that the Andreev versus Majorana controversy is clarified when framed in the language of non-Hermitian topology, the natural description for quantum systems open to the environment. This change of paradigm allows one to understand topological transitions and the emergence of zero modes in more general systems than can be described by band topology. This is achieved by studying exceptional point bifurcations in the complex spectrum of the system’s non-Hermitian Hamiltonian. Within this broader topological classification, Majoranas from both conventional band topology and a large subset of Andreev levels at zero energy are in fact topologically equivalent, which explains why they cannot be distinguished.-
dc.description.sponsorshipResearch supported by the Spanish Ministry of Science, Innovation and Universities through Grants PGC2018-097018-B-I00, FIS2015-65706-P, FIS2015-64654-P, FIS2016-80434-P (AEI/FEDER, EU), the FPI programme BES-2016-078122, the Ramón y Cajal programme Grants RYC-2011-09345, RYC-2013-14645, the María de Maeztu Programme for Units of Excellence in R&D (MDM-2014-0377), and the European Union’s Horizon 2020 research and innovation programme under the FETOPEN Grant Agreement No. 828948. We also acknowledge support from CSIC Research Platform on Quantum Technologies PTI-001.-
dc.languageeng-
dc.publisherNature Publishing Group-
dc.relationMICIU/ICTI2017-2020/PGC2018-097018-B-I00-
dc.relationMINECO/ICTI2013-2016/FIS2015-65706-P-
dc.relationMINECO/ICTI2013-2016/FIS2015-64654-P-
dc.relationMINECO/ICTI2013-2016/FIS2016-80434-P-
dc.relationMINECO/ICTI2013-2016/BES-2016-078122-
dc.relationMINECO/ICTI2013-2016/RYC-2013-14645-
dc.relationinfo:eu-repo/grantAgreement/EC/H2020/828948-
dc.relationMINECO/ICTI2013-2016/MDM-2014-0377-
dc.relation.isversionofPublisher's version-
dc.rightsopenAccess-
dc.subjectHybrid semiconductor-superconductor-
dc.subjectMajorana states controversy-
dc.subjectZero-energy Andreev levels-
dc.titleNon-hermitian topology as a unifying framework for the Andreev versus Majorana states controversy-
dc.typeartículo-
dc.relation.publisherversionhttp://dx.doi.org/10.1038/s42005-019-0231-8-
dc.date.updated2020-05-07T07:59:31Z-
dc.rights.licensehttp://creativecommons.org/licenses/by/4.0/-
dc.contributor.funderMinisterio de Ciencia, Innovación y Universidades (España)-
dc.contributor.funderMinisterio de Economía y Competitividad (España)-
dc.contributor.funderEuropean Commission-
dc.relation.csic-
dc.identifier.funderhttp://dx.doi.org/10.13039/501100003329es_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/501100000780es_ES
dc.contributor.orcidSan-José, Pablo [0000-0002-7920-5273]-
dc.contributor.orcidPeñaranda, Fernando [0000-0003-2180-3593]-
dc.contributor.orcidPrada, Elsa [0000-0001-7522-4795]-
dc.contributor.orcidAguado, Ramón [0000-0002-7464-7363]-
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