Publication:
Chiral topological superconductors enhanced by long-range interactions

dc.contributor.authorViyuela García, Óscar
dc.contributor.authorFu, Liang
dc.contributor.authorMartin-Delgado Alcántara, Miguel Ángel
dc.date.accessioned2023-06-17T12:26:09Z
dc.date.available2023-06-17T12:26:09Z
dc.date.issued2018-01-05
dc.description© 2018 American Physical Society. We thank Leonid Glazman and Tharnier Oliveira for valuable conversations. M. A. M.-D. and O. V. thank the Spanish MINECO Grant No. FIS2012-33152, the CAM research consortium QUITEMAD+S2013/ICE-2801. O. V. thanks Fundación Rafael del Pino, Fundación Ramón Areces, and RCC Harvard. The research of M. A. M.-D. has been supported in part by the U.S. Army Research Office through Grant No. W911N F-14-1-0103. The work at MIT is supported by the DOE Office of Basic Energy Sciences, Division of Materials Sciences and Engineering under Award No. DE-SC0010526. L. F. is partly supported by the David and Lucile Packard Foundation.
dc.description.abstractWe study the phase diagram and edge states of a two-dimensional p-wave superconductor with longrange hopping and pairing amplitudes. New topological phases and quasiparticles different from the usual short-range model are obtained. When both hopping and pairing terms decay with the same exponent, one of the topological chiral phases with propagating Majorana edge states gets significantly enhanced by longrange couplings. On the other hand, when the long-range pairing amplitude decays more slowly than the hopping, we discover new topological phases where propagating Majorana fermions at each edge pair nonlocally and become gapped even in the thermodynamic limit. Remarkably, these nonlocal edge states are still robust, remain separated from the bulk, and are localized at both edges at the same time. The inclusion of long-range effects is potentially applicable to recent experiments with magnetic impurities and islands in 2D superconductors.
dc.description.departmentDepto. de Física Teórica
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipSpanish MINECO
dc.description.sponsorshipCAM, Spain
dc.description.sponsorshipU.S. Army Research Office
dc.description.sponsorshipDOE Office of Basic Energy Sciences, Division of Materials Sciences and Engineering
dc.description.sponsorshipDavid and Lucile Packard Foundation
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/46392
dc.identifier.doi10.1103/PhysRevLett.120.017001
dc.identifier.issn0031-9007
dc.identifier.officialurlhttp://dx.doi.org/10.1103/PhysRevLett.120.017001
dc.identifier.relatedurlhttps://journals.aps.org
dc.identifier.urihttps://hdl.handle.net/20.500.14352/11964
dc.issue.number1
dc.journal.titlePhysical review letters
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.relation.projectIDFIS2012-33152
dc.relation.projectIDQUITEMAD+S2013/ICE-2801
dc.relation.projectIDW911N F-14-1-0103
dc.relation.projectIDDE-SC0010526
dc.rights.accessRightsopen access
dc.subject.cdu53
dc.subject.keywordNon-abelian statistics
dc.subject.keywordMajorana fermions
dc.subject.keywordBound-states
dc.subject.keywordZero modes
dc.subject.keywordInsulators
dc.subject.keywordVortices
dc.subject.keywordImpurity
dc.subject.keywordLattices
dc.subject.ucmFísica-Modelos matemáticos
dc.titleChiral topological superconductors enhanced by long-range interactions
dc.typejournal article
dc.volume.number120
dspace.entity.typePublication
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