3 papers
cond-mat.str-el2020
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…
cond-mat.str-el2019
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…
cond-mat.str-el2018
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…