Electric field dependence of pairing temperature and tunneling

Details Electric field dependence of pairing temperature and tunneling Electric field dependence of pairing temperature and tunneling

2001-11-23

arxiv.org/abs/cond-mat/0111450v3

Phys.Rev. B66 (2002) 172508

Physics

Condensed Matter

Superconductivity

4 pages 1 figure, revised version from 29.10.02, Rev. B in press

Scientific paper

10.1103/PhysRevB.66.172508

Using the Bethe-Salpeter equation including high electric fields, the dependence of the critical temperature of onsetting superconductivity on the applied field is calculated analytically. The critical temperature of pairing is shown to increase with the applied field strength. This is a new field effect and could contribute to the explanation of recent experiments on field induced superconductivity. From the field dependence of the Bethe-Salpeter equation, the two--particle bound state solution is obtained as a resonance with a tunneling probability analogous to the WKB solution of a single particle confined in a potential and coupled to the electrical field.

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