%0 Journal Article %T Multimode electron-phonon interactions in the 2-dimensional t-J-Holstein model %A D. Poilblanc %A T. Sakai %A D. J. Scalapino %A W. Hanke %J Physics %D 1995 %I arXiv %X Polaronic effects are investigated in the two dimensional t--J model (describing Cu spins and holes of the planes in high-$T_c$ 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. %U http://arxiv.org/abs/cond-mat/9511125v2