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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|
|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.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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