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Title: Edge pinning in superconducting thin films in perpendicular magnetic fields

Abstract

Flux pinning in the region of low perpendicular magnetic fields is shown to take place at the edge of granular Al films, by using external magnetic fields with spatial gradients. Both the temperature and magnetic field dependences of depinning currents due to edge pinning were measured. The experimental results suggest that the edge pinning arises from two contributions, depending in a different manner on the temperature and on the magnetic field. One is explained qualitatively by the magnetic pinning which is effective in the layer within a distance lambda/sub perpendicular/ from the edge across which the fluxoids enter the film. Here lambda/sub perpendicular/ is the penetration depth of the perpendicular magnetic field in the film. For the other contribution, which is greatest near the critical temperature, the nature of the pinning is not understood.

Authors:
; ;
Publication Date:
Research Org.:
Physics Department, Kyushu University, Fukuoka, Japan
OSTI Identifier:
6604642
Resource Type:
Journal Article
Journal Name:
J. Low Temp. Phys.; (United States)
Additional Journal Information:
Journal Volume: 33:1
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ALUMINIUM; MAGNETIC FLUX; PENETRATION DEPTH; MAGNETIC FIELDS; SUPERCONDUCTING FILMS; TRANSITION TEMPERATURE; ELEMENTS; FILMS; METALS; PHYSICAL PROPERTIES; THERMODYNAMIC PROPERTIES; 360104* - Metals & Alloys- Physical Properties; 656102 - Solid State Physics- Superconductivity- Acoustic, Electronic, Magnetic, Optical, & Thermal Phenomena- (-1987)

Citation Formats

Aomine, T, Mizuno, K, and Yamasaki, S. Edge pinning in superconducting thin films in perpendicular magnetic fields. United States: N. p., 1978. Web. doi:10.1007/BF00117073.
Aomine, T, Mizuno, K, & Yamasaki, S. Edge pinning in superconducting thin films in perpendicular magnetic fields. United States. https://doi.org/10.1007/BF00117073
Aomine, T, Mizuno, K, and Yamasaki, S. Sun . "Edge pinning in superconducting thin films in perpendicular magnetic fields". United States. https://doi.org/10.1007/BF00117073.
@article{osti_6604642,
title = {Edge pinning in superconducting thin films in perpendicular magnetic fields},
author = {Aomine, T and Mizuno, K and Yamasaki, S},
abstractNote = {Flux pinning in the region of low perpendicular magnetic fields is shown to take place at the edge of granular Al films, by using external magnetic fields with spatial gradients. Both the temperature and magnetic field dependences of depinning currents due to edge pinning were measured. The experimental results suggest that the edge pinning arises from two contributions, depending in a different manner on the temperature and on the magnetic field. One is explained qualitatively by the magnetic pinning which is effective in the layer within a distance lambda/sub perpendicular/ from the edge across which the fluxoids enter the film. Here lambda/sub perpendicular/ is the penetration depth of the perpendicular magnetic field in the film. For the other contribution, which is greatest near the critical temperature, the nature of the pinning is not understood.},
doi = {10.1007/BF00117073},
url = {https://www.osti.gov/biblio/6604642}, journal = {J. Low Temp. Phys.; (United States)},
number = ,
volume = 33:1,
place = {United States},
year = {1978},
month = {10}
}