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

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

2010-04-16

arxiv.org/abs/1004.2823v1

J. Phys. Soc. Jpn. 79 (2010) 064701

Physics

Condensed Matter

Superconductivity

16 pages, 8 figures

Scientific paper

10.1143/JPSJ.79.064701

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.

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