Quasiparticle on Bogoliubov Fermi Surface and Odd-Frequency Cooper Pair
Superconductivity
2021-09-20 v1
Abstract
We discuss a close relationship between a quasiparticle on the Bogoliubov Fermi surface and an odd-frequency Cooper pair in a superconductor in which a Cooper pair consisting of two j=3/2 electrons forms the pseudospin-quintet even-parity pair potential with breaking time-reversal symmetry. It has been established in a single-band superconductor that a low-energy quasiparticle below the superconducting gap accompanies an odd-frequency Cooper pair. In this paper, we show that an odd-frequency pair characterized by chirality coexists with a quasiparticle on the Bogoliubov Fermi surface. The symmetry of odd-frequency Cooper pairs is analyzed in detail by taking realistic pair potentials into account in a cubic superconductor.
Cite
@article{arxiv.2109.08361,
title = {Quasiparticle on Bogoliubov Fermi Surface and Odd-Frequency Cooper Pair},
author = {Dakyeong Kim and Shingo Kobayashi and Yasuhiro Asano},
journal= {arXiv preprint arXiv:2109.08361},
year = {2021}
}
Comments
6 pages, 1 figure