Nonlocal Effects on the Surface Resistance of High Temperature Superconductors with (100) and (110) Surfaces

Details Nonlocal Effects on the Surface Resistance of High Temperature Superconductors with (100) and (110) Surfaces Nonlocal Effects on the Surface Resistance of High Temperature Superconductors with (100) and (110) Surfaces

1998-11-19

arxiv.org/abs/cond-mat/9811291v2

Physics

Condensed Matter

Superconductivity

8 pages, 6 eps figures included, typos corrected, one reference updated, to be published in Journal of Superconductivity

Scientific paper

The low temperature surface resistance R_s of d-wave superconductors is calculated as function of frequency assuming normal state quasiparticle mean free paths l in excess of the penetration depth. Results depend strongly on the geometric configuration. In the clean limit, two contributions to R_s with different temperature dependencies are identified: photon absorption by quasiparticles and pair breaking. The size of nonlocal corrections, which can be positive or negative depending on frequency decreases for given l as the scattering phase shift \delta_N is increased. However, except in the unitarity limit \delta_N = 0.5 \pi, nonlocal effects should be observable.

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