Theory of the spin gap in high-temperature superconductors

Article

关键词: HIGH-TC SUPERCONDUCTIVITY;    VALENCE BOND STATE;    LATTICE RELAXATION;    NUCLEAR-RELAXATION;    NEUTRON-SCATTERING;    KNIGHT-SHIFT;    YBA2CU3O7;    EXCITATIONS;    ANISOTROPY;    TRANSPORT;   

DOI  :  10.1103/PhysRevB.53.415

来源: SCIE

【 摘 要 】

We analyze pairing in two-dimensional spin liquids. We argue that interplane pairing enhanced by magnetic correlations is the most plausible explanation of the spin-gap phenomenon observed in underdoped cuprates. The details of the pairing theory depend on the in-plane antiferromagnetic correlations. We consider two models: 2p(F) correlations induced by a strong gauge-field interaction and undamped spin waves. We estimate the pairing temperature T-s and the angular dependence of the gap function and discuss physical consequences.

【 授权许可】

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