Unconventional s-Pairing Wave Superconductivity
Bruno Mettout, Pierre Tolédano, Vladimir Lorman
DOI 10.1103/PhysRevLett.77.2284 · Physical Review Letters
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Abstract
The coupling of two dephased s-wave-pair order parameters is shown to induce two distinct low-symmetry superconducting states. One of these states is characterized by a breaking of the time-reversal symmetry, by a nonlinear magnetoelectric effect, and by a voltage threshold in the ac Josephson effect. The coupling mechanism is justified phenomenologically and microscopically.
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