Blog
About

  • Record: found
  • Abstract: found
  • Article: not found

Crossover from Josephson to multiple Andreev reflection currents in atomic contacts.

Read this article at

ScienceOpenPublisherPubMed
Bookmark
      There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

      Abstract

      The basic current-carrying mechanism through a superconducting weak link embedded in a resistive environment undergoes a continuous crossover, as the voltage increases, from Josephson Cooper pair transfer exciting electromagnetic modes in the environment to multiple Andreev reflections leading to the creation of quasiparticles. We corroborate these ideas through measurements of the dc current-voltage characteristics of superconducting atomic contacts containing channels of arbitrary and adjustable transmission. We present a simple model, in the spirit of the classical resistively shunted junction model, that accounts well for the observed characteristics.

      Related collections

      Author and article information

      Affiliations
      [1 ] Quantronics Group, Service de Physique de l'Etat Condensé (CNRS URA 2464), DSM/DRECAM/SPEC, CEA-Saclay, 91191 Gif-sur-Yvette Cedex, France.
      Journal
      Phys. Rev. Lett.
      Physical review letters
      American Physical Society (APS)
      0031-9007
      0031-9007
      Aug 10 2007
      : 99
      : 6
      17930862
      10.1103/PhysRevLett.99.067008

      Comments

      Comment on this article