Imaging spontaneous currents in superconducting arrays of p-junctions (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• Imaging spontaneous currents in superconducting arrays of p-junctions (Articolo in rivista) (literal)

Anno

• 2008-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1038/nphys780 (literal)

Alternative label

• S.M.Frolov, M.J.A.Stoutimore, T.A.Crane, D.J.Van Harlingen, V.A.Oboznov, V.R.Ryazanov, A.Ruosi, C.Granata, and M.Russo (2008)
  Imaging spontaneous currents in superconducting arrays of p-junctions
  in Nature physics (Print)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• S.M.Frolov, M.J.A.Stoutimore, T.A.Crane, D.J.Van Harlingen, V.A.Oboznov, V.R.Ryazanov, A.Ruosi, C.Granata, and M.Russo (literal)

Pagina inizio

• 32 (literal)

Pagina fine

• 36 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 4 (literal)

Rivista

• Nature physics (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note

• DOI 10.1038/nphys780 (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• 1) Department of Physycs, University of Illinois at Urbana-Champaign,USA 2) Institute of Solid State Physics, Russian Academy of Sciences Chernogolovka, Russia 3) Istituto di Cibernetica \"E.Caianiello\" del CNR (literal)

Titolo

• Imaging spontaneous currents in superconducting arrays of p-junctions (literal)

Abstract

• A charge current can flow between two superconductors separated by a thin barrier. This phenomenon is the Josephson e ff ect, which enables a current to tunnel at zero voltage , typically with no phase shift between the superconductors in the lowest-energy state. Recently, Josephson junctions with ground-state phase shifts of ?, proposed by theory three decades ago 2 , have been demonstrated . In superconducting loops, ?-junctions cause spontaneous circulation of persistent currents in zero magnetic field, in analogy to spin-1/2 systems . Here we use a scanning superconducting quantum interference device microscope 7 to image the spontaneous zero-field currents in superconducting networks of temperature-controlled ?-junctions with weakly ferromagnetic barriers. We find an onset of spontaneous supercurrents at the 0-? transition temperature of the junctions, T ? ? 3 K. We image the currents in non-uniformly frustrated arrays consisting of cells with even and odd numbers of ?-junctions. Such arrays are attractive model systems for studying the exotic phases of the two-dimensional XY-model and achieving scalable adiabatic quantum computers. (literal)

Prodotto di

• Fisica e Tecnologia dei Sistemi Coerenti (MD.P04.010.001) (Modulo)
• Istituto di cibernetica \"Edoardo Caianiello\" (ISASI) (Istituto)

Autore CNR

• CARMINE GRANATA (Persona)
• MAURIZIO RUSSO (Unità di personale interno)

Incoming links:

Autore CNR di

• CARMINE GRANATA (Persona)
• MAURIZIO RUSSO (Unità di personale interno)

Prodotto

• Istituto di cibernetica \"Edoardo Caianiello\" (ISASI) (Istituto)
• Fisica e Tecnologia dei Sistemi Coerenti (MD.P04.010.001) (Modulo)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Nature physics (Rivista)