16 citations · 19 across the 3 of their papers we have counts for
4 papers
Limitations of spin-fermion models in studying underdoped cuprates
Alvaro Ferraz, Evgenii Kochetov
A microscopic basis is provided for the spin-fermion model used to describe the physics of the underdoped cuprates. In this way, a spin-fermion coupling is shown to take care of th…
Quantum Monte Carlo study of the itinerant-localized model of strongly correlated electrons: Spin-spin correlation functions
Ilya Ivantsov, Alvaro Ferraz, Evgenii Kochetov
We perform quantum Monte Carlo simulations of the itinerant-localized periodic Kondo-Heisenberg model for the underdoped cuprates to calculate the associated spin correlation funct…
Effective approach to the Nagaoka regime of the two dimensional t-J model
M. M. Maska, M. Mierzejewski, E. A. Kochetov +3
We argue that the t-J model and the recently proposed Ising version of this model give the same physical picture of the Nagaoka regime for J/t << 1. In particular, both models are…
Dirac fermions on a disclinated flexible surface
E. A. Kochetov, V. A. Osipov
A self-consisting gauge-theory approach to describe Dirac fermions on flexible surfaces with a disclination is formulated. The elastic surfaces are considered as embeddings into R^…