Magnetic intragap states and mixed parity pairing at the edge of spin-triplet superconductors (Articolo in rivista)

Type
Label
  • Magnetic intragap states and mixed parity pairing at the edge of spin-triplet superconductors (Articolo in rivista) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevLett.110.267002 (literal)
Alternative label
  • Romano, A.ab, Gentile, P.ab, Noce, C.ab, Vekhter, I.c, Cuoco, M.ab (2013)
    Magnetic intragap states and mixed parity pairing at the edge of spin-triplet superconductors
    in Physical review letters
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Romano, A.ab, Gentile, P.ab, Noce, C.ab, Vekhter, I.c, Cuoco, M.ab (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://www.scopus.com/inward/record.url?eid=2-s2.0-84879467873&partnerID=q2rCbXpz (literal)
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  • 110 (literal)
Rivista
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  • 26 (literal)
Note
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • a CNR-SPIN, I-84084 Fisciano (Salerno), Italy b Dipartimento di Fisica E. R. Caianiello, Università di Salerno, I-84084 Fisciano (Salerno), Italy c Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803, United States (literal)
Titolo
  • Magnetic intragap states and mixed parity pairing at the edge of spin-triplet superconductors (literal)
Abstract
  • We show that a spontaneous magnetic moment may appear at the edge of a spin-triplet superconductor if the system allows for pairing in a subdominant channel. To unveil the microscopic mechanism behind such an effect, we combine numerical solution of the Bogoliubov-de Gennes equations for a tight-binding model with nearest-neighbor attraction, and the symmetry based Ginzburg-Landau approach. We find that a potential barrier modulating the electronic density near the edge of the system leads to a nonunitary superconducting state close to the boundary where spin-singlet pairing coexists with the dominant triplet superconducting order. We demonstrate that the spin polarization at the edge appears due to the inhomogeneity of the nonunitary state and originates in the lifting of the spin degeneracy of the Andreev bound states. © 2013 American Physical Society. (literal)
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