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

Lance Horng; J. C. Wu; P. C. Kang; T. C. Wu; T. J. Yang

doi:10.1016/j.jmmm.2003.12.1040

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

Lance Horng, J. C. Wu, P. C. Kang, T. C. Wu, T. J. Yang

Department of Physics

Research output: Contribution to journal › Article

Abstract

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.

Original language	English
Pages (from-to)	e1107-e1108
Journal	Journal of Magnetism and Magnetic Materials
Volume	272-276
Issue number	SUPPL. 1
DOIs	https://doi.org/10.1016/j.jmmm.2003.12.1040
Publication status	Published - 2004 May 1

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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abstract = "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.",

author = "Lance Horng and Wu, {J. C.} and Kang, {P. C.} and Wu, {T. C.} and Yang, {T. J.}",

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T1 - Matching effect and flux pinning force in a Nb superconducting thin film with a triangular lattice of artificial pinning centers

AU - Horng, Lance

AU - Wu, J. C.

AU - Kang, P. C.

AU - Wu, T. C.

AU - Yang, T. J.

PY - 2004/5/1

Y1 - 2004/5/1

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AB - 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.

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