t-J model of coupled Cu${}_2$O${}_5$ ladders in Sr${}_{14-x}$Ca${}_x$Cu${}_{24}$O${}_{41}$

Abstract

Starting from the proper charge transfer model for Cu${}_2$O${}_5$ coupled ladders in Sr${}_{14-x}$Ca${}_x$Cu${}_{24}$O${}_{41}$ we derive the low energy Hamiltonian for this system. It occurs that the widely used ladder t-J model is not sufficient and has to be supplemented by the Coulomb repulsion term between holes in the neighboring ladders. Furthermore, we show how a simple mean-field solution of the derived t-J model may explain the onset of the charge density wave with the odd period in Sr${}_{14-x}$Ca${}_x$Cu${}_{24}$O${}_{41}$.

8 pages, 4 figures, 2 tables

References in corpus (7)

• Systematic study of d-wave superconductivity in the 2D repulsive Hubbard model
• Unidirectional d-wave superconducting domains in the two-dimensional t-J model
• Magnetism and superconductivity in the $t-t^{\prime }-J$ model
• Phase diagram and single-particle spectrum of CuO${}_2$ layers within a variational cluster approach to the 3-band Hubbard model
• Diamagnetism of doped two-leg ladders and probing the nature of their commensurate phases
• Quantum melting of the hole crystal in the spin ladder of Sr14-xCaxCu24O41
• Origin of charge density wave in the coupled spin ladders in Sr${}_{14-x}$Ca${}_x$Cu${}_{24}$O${}_{41}$

Cited by in corpus (6)

• Resonant Elastic Soft X-Ray Scattering
• Phonon-Mediated Long-Range Attractive Interaction in One-Dimensional Cuprates
• Orbital control of effective dimensionality: from spin-orbital fractionalization to confinement in the anisotropic ladder system CaCu2O3
• Fidelity Study of Superconductivity in Extended Hubbard Models
• Theory of L-edge resonant inelastic x-ray scattering for magnetic excitations in two-leg spin ladder
• A light-induced charge order mode in a metastable cuprate ladder