Comparison of superconductivity in Sr2RuO4 and copper oxides

Article

关键词: T-J MODEL;    HUBBARD-MODEL;    LAYERED PEROVSKITE;    ELECTRONS;   

DOI  :  10.1103/PhysRevB.61.15392

来源: SCIE

【 摘 要 】

To compare the superconductivity in strongly correlated electron systems with the antiferrornagnetic fluctuations in the copper oxides and with the ferromagnetic fluctuations in Sr2RuO4 a t-J-l model is proposed. The antiferromagnetic coupling J results in the superconducting state of d(x2-y2) symmetry and the ferromagnetic coupling I results in the spin-triplet p-type state. The difference in the gap anisotropies provides the large difference in T-c values, for the typical values of the coupling constants: T-c similar to 1 K for the ruthenste and T-c similar to 100 K for the cuprates.

【 授权许可】

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