22 citations · 72 across the 11 of their papers we have counts for
11 papers
Photoinduced Magnetic Transitions and Excitonic Order Enhancement in Spin Crossover Strongly Correlated Electron Systems
Yuri. S. Orlov, Sergey. V. Nikolaev
The effects associated with exciton Bose condensate formation in strongly correlated spin crossover systems are considered within the effective Hamiltonian obtained from the two-or…
Light-induced ultrafast dynamics of spin crossovers in LaCoO3
Yu. S. Orlov, S. V. Nikolaev, S. G. Ovchinnikov
Ultrafast quantum dynamics relaxation of a photoexcited state in a strongly correlated spin crossover system LaCoO3 under a sudden perturbation is considered with the density matri…
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…
Phonon-assisted insulator-metal transitions in correlated systems driven by doping
E. I. Shneyder, M. V. Zotova, S. V. Nikolaev +1
We consider how electron-phonon interaction influences the insulator-metal transitions driven by doping in the strongly correlated system. Using the polaronic version of the genera…
Tunable superconductivity in Fe-pnictide heterointerfaces by diffusion control
Silvia Haindl, Sergey Nikolaev, Michiko Sato +2
New Fe-pnictide heterostructures of the type LnOFeAs/BaFeAs (Ln = La, Sm) were grown by pulsed laser deposition (PLD) and investigated. Their common structural unit of [Fe$…
Ultrafast dynamics of light-induced spin crossovers under high pressure
Yu. S. Orlov, S. V. Nikolaev, A. I. Nesterov +1
Within the multielectron model of magnetic insulator with spin crossover under high pressure we have studied the mean field phase diagrams in pressure temperature plane and dynamic…
Polaron transformations in the realistic model of the strongly correlated electron system
E. I. Shneyder, S. V. Nikolaev, M. V. Zotova +2
Electron-phonon coupling, diagonal in a real space formulation, leads to polaron paradigm of smoothly varying properties. However, fundamental changes, namely the singular behavior…
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…
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…
Cooperative Phenomena in Spin Crossover Systems
Alexander I. Nesterov, Yuri S. Orlov, Sergey G. Ovchinnikov +1
Within the framework of a realistic multi-band p-d-model, we derived an effective Hamiltonian to describe the exchange interaction effects near the spin crossover in magnetic Mott-…
Spin and charge susceptibilities of the two-orbital model within the cluster perturbation theory for Fe-based materials
S. V. Nikolaev, M. M. Korshunov
Cluster perturbation theory is used to calculate band structure, spectral functions, Fermi surface, and spin and charge susceptibilities for the two-orbital model of iron pnictides…