Matching effect and flux pinning force in a Nb superconducting thin film with a triangular lattice of artificial pinning centers

標題:	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. 電子物理學系 Department of Electrophysics
關鍵字:	matching effect;pinning force;critical current density;superconducting thin film
公開日期:	1-五月-2004
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. (C) 2003 Elsevier B.V. All rights reserved.
URI:	http://dx.doi.org/10.1016/j.jmmm.2003.12.1040 http://hdl.handle.net/11536/26850
ISSN:	0304-8853
DOI:	10.1016/j.jmmm.2003.12.1040
期刊:	JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume:	272
Issue:
起始頁:	E1107
結束頁:	E1108
顯示於類別：	期刊論文

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