Local impedance on a rough surface of a chiral p wave superconductor
Abstract
We develop a selfconsistent approach for calculating the local impedance at a rough surface of a chiral p wave superconductor. Using the quasiclassical EilenbergerLarkinOvchinnikov formalism, we numerically find the pair potential, pairing functions, and the surface density of states taking into account diffusive electronic scattering at the surface. The obtained solutions are then employed for studying the local complex conductivity and surface impedance in the broad range of microwave frequencies (ranging from subgap to abovegap values). We identify anomalous features of the surface impedance caused by generation of oddfrequency superconductivity at the surface. The results are compared with experimental data for Sr_{2}RuO_{4} and provide a microscopic explanation of the phenomenological twofluid model suggested earlier to explain anomalous features of the microwave response in this material.
 Publication:

Physical Review B
 Pub Date:
 October 2018
 DOI:
 10.1103/PhysRevB.98.134508
 arXiv:
 arXiv:1807.11735
 Bibcode:
 2018PhRvB..98m4508B
 Keywords:

 Condensed Matter  Superconductivity;
 Condensed Matter  Mesoscale and Nanoscale Physics
 EPrint:
 19 pages, 10 figures. Version 2: final version as published in PRB