Meissner response of anisotropic superconductors

Details Meissner response of anisotropic superconductors Meissner response of anisotropic superconductors

2003-03-19

arxiv.org/abs/cond-mat/0303381v2

Physics

Condensed Matter

Superconductivity

8 pages, 0 figures. 7 pages: section removed, refs. added

Scientific paper

10.1103/PhysRevB.68.104511

The response field of a half-space anisotropic superconductor is evaluated for an arbitrary weak external field source. Example sources of a point magnetic moment and a circular current are considered in detail. For the penetration depth $\lambda \ll L$ with $L$ being any other relevant distance (the source size, or the distance between the source and the superconductor), the major contribution to the response is the $\lambda$ independent field of the source image. It is shown that the absolute value of $\lambda$ cannot be extracted from the response field with a better accuracy than that for the source position. Similar problems are considered for thin films.

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