Study of Phase Dynamics in Moderately Damped Josephson Junctions (Articolo in rivista)

Type
Label
  • Study of Phase Dynamics in Moderately Damped Josephson Junctions (Articolo in rivista) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1007/s10948-012-1863-z (literal)
Alternative label
  • D. Massarotti (1) (2) L. Longobardi (2) (3) D. Stornaiuolo (2) L. Galletti (1) (2) G. Rotoli (3) A. Kawakami (4) G. P. Pepe (1) (2) F. Tafuri (2) (3) (2013)
    Study of Phase Dynamics in Moderately Damped Josephson Junctions
    in Journal of superconductivity and novel magnetism
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • D. Massarotti (1) (2) L. Longobardi (2) (3) D. Stornaiuolo (2) L. Galletti (1) (2) G. Rotoli (3) A. Kawakami (4) G. P. Pepe (1) (2) F. Tafuri (2) (3) (literal)
Pagina inizio
  • 835 (literal)
Pagina fine
  • 838 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 26 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 4 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 4 (literal)
Note
  • ISI Web of Science (WOS) (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. CNR-SPIN UOS Napoli, Complesso Universitario di Monte Sant'Angelo, Napoli, Italy 3. Dipartimento di Ingegneria dell'Informazione, Seconda Università degli Studi di Napoli, Aversa, Italy 4. National Institute of Information and Communications Technology, Kobe Advanced ICT Research Center, Kobe, Japan (literal)
Titolo
  • Study of Phase Dynamics in Moderately Damped Josephson Junctions (literal)
Abstract
  • The moderately damped regime (MDR) in a Josephson junction (JJ) is quite distinct from the well-known case of underdamped systems and quite common in devices characterized by low critical currents. Measurements of switching current distribution (SCD) are a direct way of discriminating the phase dynamics and the transport also in nontrivial cases of moderate damping. MDR is going to be more and more common with advances in nanopatterning superconductors and in materials science finalized to build hybrid devices. We report on measurements of SCDs, both in the thermal and quantum regime, on moderately damped NbN/MgO/NbN JJs. A transition from the Thermal Activation (TA) regime to Macroscopic Quantum Tunnelling (MQT) occurs at about 90 mK, while above 1.6 K a phase diffusive dynamics is clearly observed. The combined analysis of these regimes through numerical simulations allowed us to extract the fundamental parameters, which completely characterize the phase dynamics of such moderately damped JJs. (literal)
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