Conductance of a junction between a normal metal and a Berezinskii superconductor

Abstract

The conductance of a junction between a normal metal and a superconductor having the symmetry proposed by Berezinskii is studied theoretically. The main feature of this symmetry is the odd frequency dependence of the anomalous Green function, which makes possible the s-wave triplet superconducting state (the Berezinskii superconductor). The Andreev reflection (which links positive and negative energies) is sensitive to the energetic symmetry; as a result, the conductance of the junction involving the Berezinskii superconductor is qualitatively different from the case of a conventional superconductor. Experimentally, the obtained results can be employed to test the possibility of the Berezinskii superconductivity proposed for Na${}_x$CoO${}_2$ and to identify the odd-omega component predicted for superconductor-ferromagnet junctions.

5 pages (including 3 EPS figures)

References in corpus (2)

• Theory of the proximity effect in junctions with unconventional superconductors
• Josephson effect due to the long-range odd-frequency triplet superconductivity in SFS junctions with Neel domain walls

Cited by in corpus (6)

• Odd-frequency superconducting states with different types of Meissner response: Problem of coexistence
• Anomalous surface states at interfaces in p-wave superconductors
• Proximity effect in ferromagnet/superconductor hybrids: from diffusive to ballistic motion
• Consequences of bulk odd-frequency superconducting states for the classification of Cooper pairs
• Identifying the odd-frequency superconducting state by a field-induced Josephson effect
• Quantum transport in a normal metal/odd-frequency superconductor junction