Odd-frequency pairing and Josephson effect at superconducting interfaces
Superconductivity
2007-05-23 v3 Strongly Correlated Electrons
Abstract
We demonstrate that, quite generally, the spin-singlet even-parity (spin-triplet odd-parity) pair potential in a superconductor induces the odd-frequency pairing component with spin-singlet odd-parity (spin-triplet even-parity) near interfaces. The magnitude of the induced odd-frequency component is enhanced in the presence of the midgap Andreev resonant state due to the sign change of the anisotropic pair potential at the interface. The Josephson effect should therefore occur between odd- and even-frequency superconductors, contrary to the standard wisdom. A method to probe the odd-frequency superconductors is proposed.
Keywords
Cite
@article{arxiv.cond-mat/0610017,
title = {Odd-frequency pairing and Josephson effect at superconducting interfaces},
author = {Y. Tanaka and A. A. Golubov and S. Kashiwaya and M. Ueda},
journal= {arXiv preprint arXiv:cond-mat/0610017},
year = {2007}
}