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What are the internal field and the vortex density along the edges of a coated conductor or a superconducting bridge carrying current?

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1 Author(s)
Bernstein, P. ; CRISMAT- ENSICAEN (UMR-CNRS 6508) and Université de Caen-Basse Normandie, F14050 Caen, France

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In this contribution, I show that, due to demagnetizing effects, the internal field and the vortex density along the edges of coated conductors and superconducting thin film bridges carrying current can be very large. To support this claim, using relations derived between the current and the self and internal fields, the self fields along the edges of YBa2Cu3O7-δ bridges and coated conductors are calculated as functions of the transport current. The resulting values are compared to those obtained from magneto-optical and scanning Hall probe measurements. The possible consequences on the behaviour of coated conductors in the critical state are discussed.

Published in:

Journal of Applied Physics  (Volume:111 ,  Issue: 10 )