Three-Dimensional Multiband d-p Model of Superconductivity in Spin-Chain Ladder Cuprate

Abstract

We study the superconductivity in the three-dimensional multiband d-p model, in which a Cu${}_2$O${}_3$-ladder layer and a CuO${}_2$-chain layer are alternately stacked, as a model of the superconducting spin-chain ladder cuprate. $p_z$-Wave-like triplet superconductivity is found to be the most stable, and its dependence on interlayer coupling can explain the superconducting transition temperature dependence on pressure in real superconducting spin-chain ladder cuprates. The superconductivity may be enhanced if hole transfer from the chain layer to the ladder layer can be promoted beyond the typical transfer rate.

16 pages, 8 figures

References in corpus (2)

• Superconductivity in Multilayer Perovskite: Weak Coupling Analysis
• NMR and NQR study of pressure-induced superconductivity and the origin of critical-temperature enhancement in the spin-ladder cuprate Sr${}_2$Ca${}_{12}$Cu${}_{24}$O${}_{41}$