Possible isotope effect on the resonance peak formation in high-T$_c$ cuprates
Abstract
Starting from the three-band Hubbard Hamiltonian we derive an effective model including electron-phonon interaction of quasiparticles with optical phonons. Within the effective Hamiltonian we analyze the influence of electronic correlations and electron-phonon interaction on the dynamical spin susceptibility in layered cuprates. We find a huge isotope effect on the resonance peak in the magnetic spin susceptibility, , seen by inelastic neutron scattering. It results from both the electron-phonon coupling and the electronic correlation effects taken into account beyond random phase approximation(RPA) scheme. We find at optimal doping the isotope coeffiecient which can be further tested experimentally.
Keywords
Cite
@article{arxiv.cond-mat/0309503,
title = {Possible isotope effect on the resonance peak formation in high-T$_c$ cuprates},
author = {I. Eremin and O. Kamaev and M. V. Eremin},
journal= {arXiv preprint arXiv:cond-mat/0309503},
year = {2009}
}
Comments
revised version, new figure is added. Phys. Rev. B 69, 0945XX (2004); in press