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Type: Artigo de periódico
Title: Nonlocal In-plane Resistance In High-tc Superconducting Films In The Vicinity Of A Kosterlitz-thouless-type Transition
Author: Kopelevich Y.
Ciovacco F.
Esquinazi P.
Braun H.F.
Abstract: We have measured the nonlocal in-plane resistance in high-Tc superconducting YBa2Cu3O7-d films. The results obtained in zero magnetic field show a negative nonlocal resistance in the vicinity of the Kosterlitz-Thouless-type vortex-antivortex unbinding transition, as it was predicted recently by Wortis and Huse [Phys. Rev. B 54, 12413 (1996)]. We also found that the negative nonlocal resistance takes place within a certain domain of the current-temperature diagram. Our findings indicate that nonlocal measurements in "planar" geometry can be a new method to study vortex dynamics in superconductors.
Rights: fechado
Identifier DOI: 
Date Issue: 1998
Appears in Collections:Unicamp - Artigos e Outros Documentos

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