Effect of the three-center terms on the chiral superconducting d-wave pairing of the Hubbard fermions on the triangular lattice

[摘要] Using the diagram technique for the Hubbard operators an integral equation that determines the order parameter of the superconducting phase Delta(p) was obtained in the framework of t-J-V and t-J*-V models on triangular lattice. It is shown that there are two scenarios of formation of superconducting phase with gapless spectrum at the critical concentration of carriers x(c). The effect of three-center terms on implementation of this phase was also considered.

[发布日期] 2017-10-15

[效力级别]  Proceedings Paper

[关键词] Superconductivity;Chiral order parameter;Triangular lattice