• DocumentCode
    1070189
  • Title

    Advances in YBa2Cu3O7−δ Grain Boundary Biepitaxial Josephson Junctions: Transport Properties and Mesoscopic Effects

  • Author

    Stornaiuolo, Daniela ; Born, Detlef ; Dalena, Davide ; Gambale, Emilia ; Rotoli, Giacomo ; Bauch, Thilo ; Tagliacozzo, Arturo ; Barone, Antonio ; Lombardi, Filomena ; Tafuri, Francesco

  • Author_Institution
    Univ. degli Studi di Napoli Federico II, Napoli
  • Volume
    17
  • Issue
    2
  • fYear
    2007
  • fDate
    6/1/2007 12:00:00 AM
  • Firstpage
    225
  • Lastpage
    228
  • Abstract
    We report on the latest developments in the study of transport properties of YBa2Cu3O7-delta (YBCO)-based grain boundary (GB) biepitaxial Josephson junctions. We have successfully extended the fabrication process, originally developed for (110) oriented SrTiO3 substrates, to (110) oriented LaAlO3 substrates in view of microwave applications. We will report, also, on the observation of conductance fluctuations, we believe related to the coherent diffusion of quasi-particles across the GB. These results, together with the recent observation of macroscopic quantum tunneling and energy level quantization in these junctions, could help cast some light on the mechanism involved in transport across grain boundaries and in revising the role and the effect of quasi particles in d-wave transport.
  • Keywords
    copper compounds; grain boundaries; superconducting junction devices; superconductive tunnelling; yttrium compounds; YBa2Cu3O - System; biepitaxial Josephson junctions; conductance fluctuations; energy level quantization; fabrication process microwave applications; grain boundary biepitaxial josephson junctions; macroscopic quantum tunneling; mesoscopic effects; transport properties; Energy states; Fabrication; Grain boundaries; High temperature superconductors; Josephson junctions; Quantization; Sputtering; Substrates; Superconductivity; Tunneling; High temperature superconductivity; Josephson effect; Josephson junctions;
  • fLanguage
    English
  • Journal_Title
    Applied Superconductivity, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    1051-8223
  • Type

    jour

  • DOI
    10.1109/TASC.2007.898708
  • Filename
    4277736
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1070189