Multimode electron-phonon interactions in the 2-dimensional t-J-Holstein model

D. Poilblanc; T. Sakai; D. J. Scalapino; W. Hanke

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Multimode electron-phonon interactions in the 2-dimensional t-J-Holstein model

D. Poilblanc·T. Sakai·D. J. Scalapino·W. Hanke

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Abstract

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.

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D. Poilblanc, T. Sakai, D. J. Scalapino, W. Hanke. 1996-02-08. Multimode electron-phonon interactions in the 2-dimensional t-J-Holstein model. https://arxiv.org/abs/cond-mat/9511125

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