Electric field effect on epitaxial YBa2Cu3O7−x thin films

K. Joosse, Yu.M. Boguslavskij, G.J. Gerritsma, H. Rogalla

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Abstract

By applying a strong electric field perpendicular to the surface of an ultrathin, highly uniform epitaxial YBa2Cu3O7¿x film, the critical current was depressed and enhanced over 20% at temperatures close to Tc, and 5% at lower temperatures. Careful analysis of the electric field dependent I-V characteristics and Arrhenius plots indicate that the electric field effect can be interpreted as a change in the pinning potential and/or the vortex-antivortex interaction potential in the Kosterlitz-Thouless regime, as a result of a change in the carrier density in the superconductor.
Original languageEnglish
Pages (from-to)83-84
Number of pages2
JournalPhysica B
Volume194-196
Issue numberPart 1
DOIs
Publication statusPublished - 1994
Event20th International Conference on Low Temperature Physics, LT-20 1993 - Eugene, United States
Duration: 4 Aug 199311 Aug 1993
Conference number: 20

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