Phys. Rev. Lett. 81, 1933 - 1936 (1998)Time of Nucleation of Phase-Slip Centers in YBa2Cu3O7 Superconducting Bridges |
F. S. Jelila, J-P Maneval *, F-R Ladan, F. Chibane †, and A. Marie-de-Ficquelmont
Département de Physique, Ecole Normale Supérieure, 24 rue Lhomond, 75231, Paris 5, France
L. Méchin and J-C Villégier
Commissariat à l'Energie Atomique, DRFMC-SPSMS, 38054, Grenoble 9, France
M. Aprili and J. Lesueur
CSNSM, Bâtiment 108, Université Paris-Sud, 91045, Orsay, France
Received 5 December 1997
Narrow YBa2Cu3O7 films, excited by pulses of supercritical current, had their nanosecond electric response monitored in zero applied magnetic field. Delayed voltage steps plus constant differential resistance, characteristic of phase-slip centers (PSC), are observed at all temperatures. The duration of the initial zero voltage state is well fit by Ginzburg-Landau based theories, with a gap relaxation time controlled by phonon escape. At higher levels of excitation, PSC's give birth to slowly spreading normal hot spots.
©1998 The American Physical Society
URL: http://link.aps.org/abstract/PRL/v81/p1933
DOI: 10.1103/PhysRevLett.81.1933
PACS: 74.76.Bz, 74.25.Kc, 74.40.+k, 74.50.+r
* Laboratoire de Physique de la Matière Condensée, associated with Centre National de Recherche Scientifique, affiliated to Universities Paris 6 and Paris 7.
† Presently with Faculté des Sciences, University Ibnou Zohr, Agadir, Marocco.
[ Abstract | Previous article | Next article | Issue 9 ]
About PROLA | Terms and Conditions | Subscriptions | Search | Help
Content in PROLA © 2008 by The American Physical Society All rights reserved. PROLA™ is a trademark of The American Physical Society. Use of APS online journals implies that the user has read and agrees to the Terms and Conditions in the Subscription Agreement.