Quantum interference of electrons in a ring: Tuning of the geometrical phase (Articolo in rivista)

Type
Label
  • Quantum interference of electrons in a ring: Tuning of the geometrical phase (Articolo in rivista) (literal)
Anno
  • 2005-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevLett.95.226803 (literal)
Alternative label
  • Capozza R. (1); Giuliano D. (1)(2); Lucignano P. (1)(3)(4); Tagliacozzo A. (1)(3) (2005)
    Quantum interference of electrons in a ring: Tuning of the geometrical phase
    in Physical review letters (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Capozza R. (1); Giuliano D. (1)(2); Lucignano P. (1)(3)(4); Tagliacozzo A. (1)(3) (literal)
Pagina inizio
  • 226803 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 95 (literal)
Rivista
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  • 22 (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (1) Dipartimento di Scienze Fisiche, Università degli Studi di Napoli Federico II, Napoli, Italy (2) Dipartimento di Fisica, Università della Calabria and INFN, Gruppo Collegato di Cosenza, Arcavacata di Rende, Cosenza, Italy (3) Coherentia CNR-INFM, Monte S.Angelo, Napoli, Italy (4) SISSA and CNR-INFM Democritos National Simulation Center, Trieste, Italy (literal)
Titolo
  • Quantum interference of electrons in a ring: Tuning of the geometrical phase (literal)
Abstract
  • We calculate the oscillations of the dc conductance across a mesoscopic ring, simultaneously tuned by applied magnetic and electric fields orthogonal to the ring. The oscillations depend on the Aharonov-Bohm flux and of the spin-orbit coupling. They result from mixing of the dynamical phase, including the Zeeman spin splitting, and of geometric phases. By changing the applied fields, the geometric phase contribution to the conductance oscillations can be tuned from the adiabatic (Berry) to the nonadiabatic (Ahronov-Anandan) regime. To model a realistic device, we also include nonzero backscattering at the connection between ring and contacts, and a random phase for electron wave function, accounting for dephasing effects. (literal)
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