22 citations · 39 across the 7 of their papers we have counts for
7 papers
Doping- and temperature-dependent electronic structure and spin dynamics in the Hubbard model on a square lattice within cluster perturbation theory
V. I. Kuz'min, S. G. Ovchinnikov
The doping and temperature dependencies of the electronic structure and the dynamic spin susceptibility of the Hubbard model on a square lattice are studied within cluster perturba…
Pseudogap in the lightly hole-doped triangular-lattice moiré Hubbard model
V. I. Kuz'min, M. A. Visotin, S. G. Ovchinnikov
The electronic structure of the lightly hole-doped triangular-lattice moiré Hubbard model is studied within cluster perturbation theory (CPT) using 13-site clusters for a fixed dop…
One- and two-particle correlation functions in the cluster perturbation theory for cuprates
V. I. Kuz'min, S. V. Nikolaev, M. M. Korshunov +1
Physics of high- superconducting cuprates is obscured by the effect of strong electronic correlations. One way to overcome the problem is to seek for an exact solution at leas…
Excitonic ordering in strongly correlated spin crossover systems: induced magnetism and excitonic excitation spectrum
Yu. S. Orlov, S. V. Nikolaev, V. I. Kuz'min +2
The effects associated with interatomic hoppings of excitons and the excitonic Bose condensate formation in the strongly correlated spin crossover systems are considered in the fra…
Doping and temperature evolution of pseudogap and spin-spin correlations in the two-dimensional Hubbard model
Valerii Kuz'min, Maxim Visotin, Sergey Nikolaev +1
Cluster perturbation theory is applied to the two-dimensional Hubbard model to obtain doping and temperature dependent electronic spectral function with a…
Magnetism in spin crossover systems: short-range order and effects beyond the Heisenberg model
V. I. Kuz'min, Yu. S. Orlov, A. E. Zarubin +2
To study non-Heisenberg effects in the vicinity of spin crossover in strongly correlated electron systems we derive an effective low-energy Hamiltonian for the two-band Kanamori mo…
Effect of short-range correlations on spectral properties of doped Mott insulators
V. I. Kuz'min, S. V. Nikolaev, S. G. Ovchinnikov
In the framework of cluster perturbation theory for the 2D Hubbard and Hubbard-Holstein models at low hole doping we have studied the effect of local and short-range correlations i…