Mechanism of superconductivity in a two-dimensional double-exchange system with spin-orbit coupling

Article

关键词: ANISOTROPIC SUPEREXCHANGE INTERACTION;    QUANTUM;    TEMPERATURE;    SR2RUO4;    STATE;    TERM;   

DOI  :  10.1103/PhysRevB.64.012510

来源: SCIE

【 摘 要 】

We propose a mechanism of unconventional superconductivity in a two-dimensional double-exchange system with spin-orbit coupling. We show that a Chern-Simons term is induced by integrating out the conduction electron fields. In the presence of the Chern-Simons term, the conduction electrons behave like skyrmion or antiskyrmion excitations for the core spin system, which leads to a disordered state of the core spins. After magnetic long-range order is destroyed, the Chern-Simons term becomes dominant for the low-energy physics and leads to a p-wave pairing state of conduction electrons.

【 授权许可】

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