Flux-creep-limited critical currents in YBa2Cu3O 7-δ ceramics

Uri Dai, Nir Hess, Leandro R. Tessler, Guy Deutscher, Genevieve Vetter, Francine Queyroux, Nicole Bontemps, Roger Mahoum, Michel Lagues, Philippe Mocaer

Research output: Contribution to journalArticlepeer-review

Abstract

Critical currents of YBa2Cu3O7-δ bulk-sintered samples were measured at and above 77 K in the presence of magnetic fields. In moderate magnetic fields a H-n dependence with n<1 was observed. Transport measurements give n≅0.5, indicating that critical currents are limited by flux creep rather than by field quenching of Josephson junctions.

Original languageEnglish
Pages (from-to)1135-1137
Number of pages3
JournalApplied Physics Letters
Volume55
Issue number11
DOIs
StatePublished - 1989

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