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’s 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 CoO2 and to identify the odd-ω component predicted for superconductor-ferromagnet systems.
- Publication:
-
Soviet Journal of Experimental and Theoretical Physics Letters
- Pub Date:
- February 2008
- DOI:
- 10.1134/S0021364007230117
- arXiv:
- arXiv:0705.0813
- Bibcode:
- 2008JETPL..86..732F
- Keywords:
-
- 74.20.Rp;
- 74.25.Fy;
- 74.45.+c;
- 74.50.+r;
- Pairing symmetries;
- Transport properties;
- Proximity effects;
- Andreev effect;
- SN and SNS junctions;
- Tunneling phenomena;
- point contacts weak links Josephson effects;
- Condensed Matter - Superconductivity;
- Condensed Matter - Mesoscopic Systems and Quantum Hall Effect
- E-Print:
- 5 pages (including 3 EPS figures)