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Magnetic field of Josephson vortices outside superconductors

Journal Article · · Physical Review. B, Condensed Matter and Materials Physics

We consider the structure of Josephson vortices approaching the junction boundary with vacuum in large-area Josephson junctions with the Josephson length {lambda}{sub J} large relative to the London penetration depth {lambda}{sub L}. Using the stability argument for one-dimensional solitons with respect to two-dimensional perturbations, it is shown that on the scale {lambda}{sub J}, the Josephson vortices do not spread near the boundary in the direction of the junction. The field distribution in vacuum due to the Josephson vortex is evaluated, the information needed for the scanning superconducting quantum interference device microscopy.

Research Organization:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
DOE Contract Number:
AC02-07CH11358
OSTI ID:
975801
Report Number(s):
IS-J 7429
Journal Information:
Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 132504 Vol. 77; ISSN 1098-0121
Country of Publication:
United States
Language:
English

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