Surface impedance of superconductors with magnetic impurities

Details Surface impedance of superconductors with magnetic impurities Surface impedance of superconductors with magnetic impurities

2011-09-15

arxiv.org/abs/1109.3395v1

Physics

Condensed Matter

Superconductivity

8 pages, 3 figs

Scientific paper

Motivated by the problem of the residual surface resistance of the superconducting radio-frequency (SRF) cavities, we develop a microscopic theory of the surface impedance of s-wave superconductors with magnetic impurities. We calculate the current response function and surface impedance for a sample with spatially uniform distribution of impurities, treating magnetic impurities in the framework of the Shiba theory. The obtained results are valid in a wide range of parameter values. As the key feature, we show that in the regime of "gapless superconductivity" the surface resistance exhibits saturation at zero temperature. Our theory thus explicitly demonstrates that magnetic impurities, presumably contained in the oxide surface layer of the SRF cavities, provide a microscopic mechanism for the residual resistance.

Affiliated with

Also associated with

No associations

Rating

Surface impedance of superconductors with magnetic impurities does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Surface impedance of superconductors with magnetic impurities, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Surface impedance of superconductors with magnetic impurities will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-673642