We study a periodic polaronic system, which exhibits a nanoscale superlattice structure, as a model for hole-doped cuprates with checkerboard-like heterogeneity, as has been observed recently by scanning tunneling microscopy (STM). Within this model, the electronic and phononic excitations are investigated by applying an unrestricted Hartree-Fock and a random phase approximation (RPA) to a multiband Peierls-Hubbard Hamiltonian in two dimensions.
@article{arxiv.cond-mat/0406042,
title = {Local edge modes in doped cuprates with checkerboard polaronic heterogeneity},
author = {Eiji Kaneshita and Ivar Martin and Alan R. Bishop},
journal= {arXiv preprint arXiv:cond-mat/0406042},
year = {2009}
}