Charge density wave in the spin ladder of Sr$_{14-x}$Ca$_x$Cu$_{24}$O$_{41}$

Wohlfeld, Krzysztof; Oles, Andrzej M.; Sawatzky, George A.

Charge density wave in the spin ladder of Sr$_{14-x}$Ca$_x$Cu$_{24}$O$_{41}$

Authors

Wohlfeld, Krzysztof

Oles, Andrzej M.

Sawatzky, George A.

Description

We consider a multiband charge transfer model for a single spin ladder describing the holes in Sr$_{14-x}$Ca$_x$Cu$_{24}$O$_{41}$. Using Hartree-Fock approximation we show how the charge density wave, with its periodicity dependent on doping as recently observed in the experiment, can be stabilized by purely electronic many-body interactions.
4 pages, 2 figures, accepted for publication in Physica C as the proceedings of the M2S-HTSC VIII Conference, Dresden 2006