Quantum transport in a normal metal/odd-frequency superconductor junction

Recent experimental results indicate the possible realization of a bulk odd-frequency superconducting state in the compounds CeCu\(_2\)Si\(_2\), and CeRhIn\(_5\). Motivated by this, we present a study of the quantum transport properties of a normal metal/odd-frequency superconductor junctions in a s...

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Bibliographic Details
Published in:arXiv.org 2008-04
Main Authors: Linder, Jacob, Yokoyama, Takehito, Tanaka, Yukio, Asano, Yasuhiro, Asle Sudb\o
Format: Article
Language:English
Subjects:
Electrical junctions
Formalism
Quantum transport
Silicon compounds
Superconductivity
Superconductor junctions
Thermal conductivity
Transport properties
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Summary:Recent experimental results indicate the possible realization of a bulk odd-frequency superconducting state in the compounds CeCu\(_2\)Si\(_2\), and CeRhIn\(_5\). 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.
ISSN:2331-8422
DOI:10.48550/arxiv.0712.0443