Identifying the odd-frequency superconducting state by a field-induced Josephson effect

Abstract

Superconducting order parameters that are odd under exchange of time-coordinates of the electrons constituting a Cooper-pair, are potentially of great importance both conceptually and technologically. Recent experiments report that such an odd-frequency superconducting {\it bulk} state may be realized in certain heavy-fermion compounds. While the Josephson current normally only flows between superconductors with the same symmetries with respect to frequency, we demonstrate that an exchange field may induce a current between diffusive even- and odd-frequency superconductors. This suggests a way to identify the possible existence of bulk odd-frequency superconductors.

10 pages, 7 figures. To appear in Physical Review B

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Cited by in corpus (12)

• Symmetry and Topology in Superconductors - Odd-frequency pairing and edge states -
• Odd-frequency superconductivity
• Signature of odd-frequency pairing correlations induced by a magnetic interface
• Theory of superconducting and magnetic proximity effect in S$\mid$F structures with inhomogeneous magnetization textures and spin-active interfaces
• Meissner Effect Probing of Odd-Frequency Triplet Pairing in Superconducting Spin Valves
• 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
• Josephson current in diffusive multilayer superconductor/ferromagnet/superconductor junctions
• Realization of Berezinskii's superconductivity in quasi-one-dimensional systems
• Proximity effect in ferromagnet/superconductor hybrids: from diffusive to ballistic motion
• Induced odd-frequency superconducting state in vertex-corrected Eliashberg theory
• Anomalous Surface Impedance in a Normal-metal/Superconductor Junction with a Spin-active Interface