Thickness dependence of magnetic force and vortex creation in type-II superconducting thin film

J. C. Wei; J. L. Chen; L. Horng; T. J. Yang

doi:10.1016/0921-4534(96)00374-7

Thickness dependence of magnetic force and vortex creation in type-II superconducting thin film

J. C. Wei, J. L. Chen, L. Horng, T. J. Yang

Department of Physics

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

We examined a single vortex line in an infinite type-II superconducting thin film with finite thickness. The thickness dependence of the magnetic force acting on a point dipole placed above a superconducting film is calculated as the negative of the gradient of the interaction energy, coupled to the London theory of superconductivity with electromagnetics. We also considered the situation of a single vortex creation in the thin film, caused by the field of the magnetic dipole tip itself. The thickness dependence of the critical position of the point dipole for creating the first vortex line in the thin film is calculated.

Original language	English
Pages (from-to)	345-354
Number of pages	10
Journal	Physica C: Superconductivity and its applications
Volume	267
Issue number	3-4
DOIs	https://doi.org/10.1016/0921-4534(96)00374-7
Publication status	Published - 1996 Aug 20

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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AU - Wei, J. C.

AU - Chen, J. L.

AU - Horng, L.

AU - Yang, T. J.

PY - 1996/8/20

Y1 - 1996/8/20

N2 - We examined a single vortex line in an infinite type-II superconducting thin film with finite thickness. The thickness dependence of the magnetic force acting on a point dipole placed above a superconducting film is calculated as the negative of the gradient of the interaction energy, coupled to the London theory of superconductivity with electromagnetics. We also considered the situation of a single vortex creation in the thin film, caused by the field of the magnetic dipole tip itself. The thickness dependence of the critical position of the point dipole for creating the first vortex line in the thin film is calculated.

AB - We examined a single vortex line in an infinite type-II superconducting thin film with finite thickness. The thickness dependence of the magnetic force acting on a point dipole placed above a superconducting film is calculated as the negative of the gradient of the interaction energy, coupled to the London theory of superconductivity with electromagnetics. We also considered the situation of a single vortex creation in the thin film, caused by the field of the magnetic dipole tip itself. The thickness dependence of the critical position of the point dipole for creating the first vortex line in the thin film is calculated.

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