Screening of electromagnetic field fluctuations by s--wave and d--wave superconductors
arXiv:0902.1981 · doi:10.1088/0953-4075/43/2/025001
Abstract
We investigate theoretically the shielding of the electromagnetic field fluctuations by s-wave and d-wave superconductors within the framework of macroscopic quantum electrodynamics. The spin flip lifetime is evaluated above a niobium and a bismuth strontium calcium copper oxide (BSCCO) surface, and the screening effect is studied as a function of the thickness of the superconducting layer. Further, we study the different temperature dependence of the atomic spin relaxation above the two superconductors.
7 pages, 5 figures
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