Spin Response in Hole-Doped Cuprates Within the Cluster Perturbation Theory
Ovchinnikov, S.G., Kuz’min, V.I., Nikolaev, S.V., Korshunov, M.M.// Journal of Superconductivity and Novel Magnetism//
https://doi.org/10.1007/s10948-024-06829-z
We studied the dynamical spin susceptibility within the Hubbard model for hole-doped cuprates using cluster perturbation-based methods. Together with the one-electron spectral function, the two-particle response for 3 × 3 and 4 × 4 clusters are calculated and compared to each other. The results obtained are in qualitative agreement with the resonant inelastic neutron scattering and quantum Monte Carlo data.