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 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.

7 pages, 3 figures. Accepted for publication in Physical Review B

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Cited by in corpus (10)

• Odd-frequency superconductivity
• Theory of superconducting and magnetic proximity effect in S$\mid$F structures with inhomogeneous magnetization textures and spin-active interfaces
• Spin-active interfaces and unconventional pairing in half-metal$\mid$superconductor junctions
• Odd-frequency Superconductivity on a Quasi-one-dimensional Triangular Lattice in the Hubbard Model
• Proximity effect in ferromagnet/superconductor hybrids: from diffusive to ballistic motion
• Odd-frequency Superconductivity Revealed by Thermopower
• Signature of odd-frequency equal-spin triplet pairing in the Josephson current on the surface of Weyl nodal loop semimetals
• Thermoelectricity carried by proximity-induced odd-frequency pairing in ferromagnet/superconductor junctions
• Odd-frequency superconductivity induced in topological insulators with and without hexagonal warping
• Anomalous Surface Impedance in a Normal-metal/Superconductor Junction with a Spin-active Interface