Journal
JETP LETTERS
Volume 86, Issue 11, Pages 732-736Publisher
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S0021364007230117
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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's function, which makes possible the s-wave triplet superconducting state (the Berezinskiii 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 NaxCoO2 and to identify the odd-omega component predicted for superconductor-ferromagnet systems.
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