Anomalous Surface Impedance due to Odd-frequency Cooper Pairs
Superconductivity
2011-08-25 v2
Abstract
We discuss dynamical response of odd-frequency Cooper pairs to electromagnetic field. By using the quasiclassical Green function method, we calculate the surface impedance (Z=R-iX) of a normal metal thin film which covers a superconductor. In contrast to the standard relation (i.e., R << X), the surface impedance in spin-triplet proximity structures shows anomalous behavior (i.e., R>X) at low temperatures. This unusual relation is a result of the penetration of odd-frequency pairs into the normal metal and reflects the negative Cooper pair density.
Cite
@article{arxiv.1010.1574,
title = {Anomalous Surface Impedance due to Odd-frequency Cooper Pairs},
author = {Yasuhiro Asano and Alexander A. Golubov and Yakov V. Fominov and Yukio Tanaka},
journal= {arXiv preprint arXiv:1010.1574},
year = {2011}
}
Comments
5 pages, 3 figures embeded