Orbital ordering in undoped manganites via a generalized Peierls instability
Strongly Correlated Electrons
2015-05-13 v3 Materials Science
Abstract
We study the ground state orbital ordering of , at weak electron-phonon coupling, when the spin state is A-type antiferromagnet. We determine the orbital ordering by extending to our Jahn-Teller system a recently developed Peierls instability framework for the Holstein model [1]. By using two-dimensional dynamic response functions corresponding to a mixed Jahn-Teller mode, we establish that the mode determines the orbital order.
Cite
@article{arxiv.0808.1174,
title = {Orbital ordering in undoped manganites via a generalized Peierls instability},
author = {S. Yarlagadda and P. B. Littlewood and M. Mitra and R. K. Monu},
journal= {arXiv preprint arXiv:0808.1174},
year = {2015}
}
Comments
A few changes made. Accepted in Phys. Rev. B