2003/03/24 by V. G. Kogan · 1 citation
Physics and Astronomy · #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.68.104511
8 pages, 0 figures. 7 pages: section removed, refs. added
arxiv created 2003/03/24 · arxiv updated 2009/11/30
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 λ≪ 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 λ independent field of the source image. It is shown that the absolute value of λ cannot be extracted from the response field with a better accuracy than that for the source position. Similar problems are considered for thin films.