Multiband superconductivity and nanoscale inhomogeneity at oxide interfaces (Articolo in rivista)

Type
Label
  • Multiband superconductivity and nanoscale inhomogeneity at oxide interfaces (Articolo in rivista) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.88.020504 (literal)
Alternative label
  • S. Caprara (1,2); J. Biscaras (3); N. Bergeal (3); D. Bucheli (1); S. Hurand (3); C. Feuillet-Palma (3); A. Rastogi (4); R.C. Budhani (4,5); J. Lesueur (3); M. Grilli (1,2) (2013)
    Multiband superconductivity and nanoscale inhomogeneity at oxide interfaces
    in Physical review. B, Condensed matter and materials physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • S. Caprara (1,2); J. Biscaras (3); N. Bergeal (3); D. Bucheli (1); S. Hurand (3); C. Feuillet-Palma (3); A. Rastogi (4); R.C. Budhani (4,5); J. Lesueur (3); M. Grilli (1,2) (literal)
Pagina inizio
  • 020504(R) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://prb.aps.org/abstract/PRB/v88/i2/e020504 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 88 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 5 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 2 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (1) Dipartimento di Fisica, Università di Roma \"La Sapienza\", Piazzale Aldo Moro 5, 00185 Roma, Italy (2) ISC-CNR and Consorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia, Unità di Roma \"Sapienza\", Roma, Italy (3) LPEM-UMR8213/CNRS-ESPCI Paris Tech, UPMC, 10 rue Vauquelin, 75005 Paris, France (4) Department of Physics, Condensed Matter - Low Dimensional Systems Laboratory, Indian Institute of Technology Kanpur, Kanpur, 208016, India (5) National Physical Laboratory, New Delhi, 110012, India (literal)
Titolo
  • Multiband superconductivity and nanoscale inhomogeneity at oxide interfaces (literal)
Abstract
  • The two-dimensional electron gas at the LaTiO3/SrTiO3 or LaAlO3/SrTiO3 oxide interfaces becomes superconducting when the carrier density is tuned by gating. The measured resistance and superfluid density reveal an inhomogeneous superconductivity resulting from percolation of filamentary structures of superconducting \"puddles\" with randomly distributed critical temperatures, embedded in a nonsuperconducting matrix. Following the evidence that superconductivity is related to the appearance of high-mobility carriers, we model intrapuddle superconductivity by a multiband system within a weak coupling BCS scheme. The microscopic parameters, extracted by fitting the transport data with a percolative model, yield a consistent description of the dependence of the average intrapuddle critical temperature and superfluid density on the carrier density. (literal)
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