Fractionalization of Majorana-Ising-type quasiparticle excitations

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dc.contributor.authorSanches, J. E. [UNESP]
dc.contributor.authorLustosa, L. T. [UNESP]
dc.contributor.authorRicco, L. S.
dc.contributor.authorShelykh, I. A.
dc.contributor.authorDe Souza, M. [UNESP]
dc.contributor.authorFigueira, M. S.
dc.contributor.authorSeridonio, A. C. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionUniversity of Iceland
dc.contributor.institutionMipt
dc.contributor.institutionUniversidade Federal Fluminense (UFF)
dc.date.accessioned2023-07-29T13:53:58Z
dc.date.available2023-07-29T13:53:58Z
dc.date.issued2023-04-15
dc.description.abstractWe theoretically investigate the spectral properties of a quantum impurity (QI) hosting the here proposed Majorana-Ising-type quasiparticle excitation. It arises from the coupling between a finite topological superconductor (TSC) based on a chain of magnetic adatoms-superconducting hybrid system and an integer large spin S flanking the QI. It is noteworthy that the spin S couples to the QI via the Ising-type exchange interaction. As the Majorana zero modes (MZMs) at the edges of the TSC chain are overlapped, we counterintuitively find a regime wherein the Ising term modulates the localization of a fractionalized and resonant MZM at the QI site. Interestingly enough, the fermionic nature of this state is revealed as purely of the electron tunneling type and, most astonishingly, it has the Andreev conductance completely null in its birth. Therefore, we find that a resonant edge state appears as a zero mode and discuss it in terms of a poor man's Majorana [Dvir, Nature 614, 445 (2023)0028-083610.1038/s41586-022-05585-1].en
dc.description.affiliationSão Paulo State University (Unesp) School of Engineering Department of Physics and Chemistry, Ilha Solteira-SP
dc.description.affiliationScience Institute University of Iceland, Dunhagi-3
dc.description.affiliationAbrikosov Center for Theoretical Physics Mipt, Dolgoprudnyi, Moscow Region
dc.description.affiliationSão Paulo State University (Unesp) Igce Department of Physics, SP
dc.description.affiliationInstituto de Física Universidade Federal Fluminense, Niterói
dc.description.affiliationUnespSão Paulo State University (Unesp) School of Engineering Department of Physics and Chemistry, Ilha Solteira-SP
dc.description.affiliationUnespSão Paulo State University (Unesp) Igce Department of Physics, SP
dc.identifierhttp://dx.doi.org/10.1103/PhysRevB.107.155144
dc.identifier.citationPhysical Review B, v. 107, n. 15, 2023.
dc.identifier.doi10.1103/PhysRevB.107.155144
dc.identifier.issn2469-9969
dc.identifier.issn2469-9950
dc.identifier.scopus2-s2.0-85158852132
dc.identifier.urihttp://hdl.handle.net/11449/248797
dc.language.isoeng
dc.relation.ispartofPhysical Review B
dc.sourceScopus
dc.titleFractionalization of Majorana-Ising-type quasiparticle excitationsen
dc.typeArtigo
unesp.author.orcid0000-0002-8096-8198[1]
unesp.author.orcid0000-0002-2769-1046[3]
unesp.author.orcid0000-0002-2466-3402[5]
unesp.author.orcid0000-0001-5612-9485[7]
unesp.departmentFísica e Química - FEISpt

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Ilha Solteira - FEIS - Faculdade de Engenharia
Artigos - Física - IGCE