National Changhua University of Education Institutional Repository : Item 987654321/15371
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题名: Matching Effect and Flux Pinning Force in a Nb Superconducting Thin Film with a Triangular Lattice of Artificial Pinning Centers
作者: Horng, Lance;Wu, J. C.;Kang, P. C.;Wu, T. C.;Yang, T. J.
贡献者: 物理學系
关键词: Matchingeffect;Pinning force;Critical current density;Superconducting thin film
日期: 2004-05
上传时间: 2013-02-05T02:18:23Z
出版者: Elsevier
摘要: A strong pinning force in a Nb superconducting thin film is formed by a triangular lattice of defects due to the structural corrugation that acts as pinning centers. The magnetoresistance measurement close to the transition temperature shows a set of minima of magnetoresistance at equal external field intervals. A crossover in current–voltage relations with matching field and half-integer matching field occurs for currents exceeding a certain threshold value. The phenomenon is related to the presence of pinning structures at matching fields.
關聯: Journal of Magnetism and Magnetic Materials, 272-276 Supplement: E1107-E1108
显示于类别:[物理學系] 期刊論文

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