Phase diagram for a t-J bilayer: role of interlayer couplings

摘要: The phase diagram for a t-J bilayer as function of interplanar hopping, t⊥ and hole concentration, x is presented few different values exchange, J⊥ using variational Monte Carlo calculations. shows rich features, such coexistence antiferromagnetism superconductivity at underdoping, planar (d-wave) (dz-wave) superconducting correlations small large J⊥, respectively optimal overdoping. Another unusual feature appears in the form dome shaped structure where are initially assisted hopping enhanced t⊥, while larger found to be detrimental superconductivity.