Quantum transport in a normal metal/odd-frequency superconductor junction
Abstract
Recent experimental results indicate the possible realization of a bulk odd-frequency superconducting state in the compounds CeCuSi, and CeRhIn. Motivated by this, we present a study of the quantum transport properties of a normal metal/odd-frequency superconductor junctions in a search for probes to unveil the odd-frequency symmetry. From the Eliashberg equations, we perform a quasiclassical approximation to account for the transport formalism of an odd-frequency superconductor with the Keldysh formalism. Specifically, we consider the tunneling charge conductance and tunneling thermal conductance. We find qualitatively distinct behaviour in the odd-frequency case as compared to the conventional even-frequency case, in both the electrical and thermal current. This serves as a useful tool to identify the possible existence of a bulk odd-frequency superconducting state.
Cite
@article{arxiv.0712.0443,
title = {Quantum transport in a normal metal/odd-frequency superconductor junction},
author = {Jacob Linder and Takehito Yokoyama and Yukio Tanaka and Yasuhiro Asano and Asle Sudbø},
journal= {arXiv preprint arXiv:0712.0443},
year = {2008}
}
Comments
7 pages, 3 figures. Accepted for publication in Physical Review B