Abstract
Starting from the three-band p — d Hubbard Hamiltonian we derive the effective single-correlated model Hamiltonian including electron-phonon interaction of quasiparticles with optical phonons and strong electron correlations. Within an effective Hamiltonian we analyze their influence on the dynamical spin susceptibility in layered cuprates. We find an isotope effect on resonance peak in the magnetic spin susceptibility, Im ϰ(q, ω), 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.
Keywords
- High-Tc cuprates
- spin susceptibility
- electron-phonon interaction
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Eremin, M., Eremin, I. (2005). Dynamical Spin Susceptibility in Singlet-Correlated Band Model. In: Ashkenazi, J., et al. New Challenges in Superconductivity: Experimental Advances and Emerging Theories. NATO Science Series II: Mathematics, Physics and Chemistry, vol 183. Springer, Dordrecht. https://doi.org/10.1007/1-4020-3085-1_28
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DOI: https://doi.org/10.1007/1-4020-3085-1_28
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