33 citations · 166 across the 26 of their papers we have counts for
26 papers
Spherically symmetric approaches in the theoretical study of low-dimensional magnets
A. F. Barabanov, V. E. Valiulin, A. V. Mikheyenkov +1
The main ideas and some of the most important results of the spherically symmetric self-consistent approach and a number of related theoretical algorithms are presented. These meth…
Spectral characteristics of the antiferromagnetic spin-1/2 Heisenberg model on the square lattice in a magnetic field
P. S. Savchenkov, A. F. Barabanov
We predict that spin-waves in an ordered square quantum antiferromagnet in a transverse magnetic field (h) may demonstrate three modes of spin excitations. Starting from the self-c…
Magnetic spiral order in the square-lattice spin system (CuBr)SrNbO
A. V. Mikheyenkov, V. E. Valiulin, A. F. Barabanov
We address quantum spin helical states in the strongly frustrated Heisenberg model. Contrary to conventional Dzyaloshinskii-Moriya approach we show that such states appear without…
Thermodynamics of symmetric spin--orbital model: One- and two-dimensional cases
V. E. Valiulin, A. V. Mikheyenkov, K. I. Kugel +1
The specific heat and susceptibilities for the two- and one-dimensional spin--orbital models are calculated in the framework of a spherically symmetric self-consistent approach at…
Continuous transformation between ferro and antiferro circular structures in frustrated Heisenberg model
V. E. Valiulin, A. V. Mikheyenkov, N. M. Chtchelkatchev +1
Frustrated magnetic compounds, in particular low-dimensional, are topical research due to persistent uncover of novel nontrivial quantum states and potential applications. The prob…
Coulomb repulsion of holes and competition between d_{x^2-y^2}-wave and s-wave parings in cuprate superconductors
V. V. Val'kov, D. M. Dzebisashvili, M. M. Korovushkin +1
The effect of the Coulomb repulsion of holes on the Cooper instability in an ensemble of spin-polaron quasiparticles has been analyzed, taking into account the peculiarities of the…