Multimode electron-phonon interactions in the 2-dimensional t-J-Holstein model
Abstract
Polaronic effects are investigated in the two dimensional t--J model (describing Cu spins and holes of the planes in high- cuprates) in the presence of in-plane dynamic oxygen breathing modes. We focus on the effect of dynamic multi-phonon modes. Spin and charge structure factors are computed. We found evidence for self-localisation of the holes and {\it increased} short range antiferromagnetic spin-spin correlations between the remaining spins. This effect persists when all the in-plane oxygen vibration degrees of freedom are taken into account. This suggests that dynamic phonons could play a key role in stabilizing inhomogeneous stripe phases or domain wall structures.
Cite
@article{arxiv.cond-mat/9511125,
title = {Multimode electron-phonon interactions in the 2-dimensional t-J-Holstein model},
author = {D. Poilblanc and T. Sakai and D. J. Scalapino and W. Hanke},
journal= {arXiv preprint arXiv:cond-mat/9511125},
year = {2008}
}
Comments
Revised version, RevTex, 3 pages, 3 figures in uuencoded format appended