Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2003-09-16
Physics
Condensed Matter
Strongly Correlated Electrons
5 pages, 5 figures
Scientific paper
Using the Quantum Monte Carlo (QMC) technique within frozen-phonon, we studied the effects of the half-breathing O$(\pi,0)$ phonon mode on the ground-state properties of the three-band Peierls-Hubbard model. Our simulations are performed for both ionic and covalent electron-phonon couplings. The effects of lattice displacements on the ground-state energies and charge fluctuations are similar in magnitude for both hole- and electron-doped cases. However, the effects of lattice displacements on the magnetic properties are rather different. In the hole-doped case, the normalized next-nearest-neighbor Cu-Cu spin correlations are dramatically modified by both ionic and covalent electron-phonon couplings. On the other hand, in the electron-doped case, much smaller effects are observed. The distinct spin-phonon couplings, in conjunction with the spin-bag picture of the quasiparticle, could explain a strong mass renormalization effect in the p-type cuprates and a weaker effect in the n-type cuprates.
Arrigoni Enrico
Hanke Werner
Huang Z. B.
No associations
LandOfFree
Asymmetric electron-phonon interactions in the three-band Peierls-Hubbard model does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Asymmetric electron-phonon interactions in the three-band Peierls-Hubbard model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Asymmetric electron-phonon interactions in the three-band Peierls-Hubbard model will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-690346