Fluctuation-induced odd-frequency spin-triplet pairing in a disordered electron liquid

Article

关键词: SUPERCONDUCTOR-INSULATOR TRANSITIONS;    PHASE-TRANSITIONS;    LOCALIZATION;    1ST-ORDER;    SYSTEMS;    GAP;   

DOI  :  10.1103/PhysRevB.105.214523

来源: SCIE

【 摘 要 】

We consider a two-dimensional disordered conductor in the regime when the superconducting phase is destroyed by the magnetic field. We analyze a combination of fluctuations of different origin which results in an effective interaction amplitude suitable for a spontaneous s-wave odd-frequency pairing instability. We observe that the end point of the superconductivity is a quantum critical point separating the conventional superconducting phase from a state with the odd-frequency spin-triplet pairing instability. We speculate that this could shed light on a rather mysterious insulating state observed in strongly disordered superconducting films in a broad region of the magnetic fields.

【 授权许可】

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