Phase separation and pairing in coupled chains and planes

Abstract

A generalization of the $t-J$ model in a system of two coupled chains or planes is studied by numerical diagonalization of small clusters. In particular, the effect of density fluctuations between these one- or two-dimensional coupled layerson intralayer phase separation and pairing is analyzed. The most robust signals of superconductivity are found at quarter filling for couplings just before the fully interlayer phase separated regime. The possibility of an enhancement of the intralayer superconducting pairing correlations by the interlayer couplings is investigated.

13 pages + 3 figures, available upon request, LATEX, preprint ORNL/CCIP/93/12

References in corpus (3)

• Spin Gaps and Spin Dynamics in La_{2-x}Sr_xCuO_4 and YBa_2Cu_3O7_δ
• Indications of d_{x^2 - y^2} Superconductivity in the Two Dimensional t-J Model
• Numerical Study of the Wheatley-Hsu-Anderson Interlayer Tunneling mechanism of High $T_c$ Superconductivity

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