51 citations · 240 across the 17 of their papers we have counts for
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Bose-Einstein condensation of semi-hard bosons in S=1 dimerized organic compound F2PNNNO
I. G. Bostrem, V. E. Sinitsyn, A. S. Ovchinnikov
An analysis of the energy spectrum and the magnetization curve of two-dimensional organic antiferromagnet F2PNNNO with a spin-one dimerized structure shows that a behavior of the c…
Symmetry adapted finite-cluster solver for quantum Heisenberg model in two-dimensions: a real-space renormalization approach
V. E. Sinitsyn, I. G. Bostrem, A. S. Ovchinnikov
We present a quantum cluster solver for spin- Heisenberg model on a two-dimensional lattice. The formalism is based on the real-space renormalization procedure and uses the latt…
Topological stripelike coreless textures with inner incommensurability in two-dimensional Heisenberg antiferromagnet
E. V. Sinitsyn, I. G. Bostrem, A. S. Ovchinnikov
For two-dimensional Heisenberg antiferromagnet we present an analysis of topological coreless excitations having a stripe form. These textures are characterized by singularities at…
The variational symmetries and conservation laws in classical theory of Heisenberg (anti)ferromagnet
R. F. Egorov, I. G. Bostrem, A. S. Ovchinnikov
The nonlinear partial differential equations describing the spin dynamics of Heisenberg ferro and antiferromagnet are studied by Lie transformation group method. The generators of…
A long-wave action of spin Hamiltonians and the inverse problem of the calculus of variations
I. G. Bostrem, A. S. Ovchinnikov, R. F. Egorov
We suggest a method of derivation of the long-wave action of the model spin Hamiltonians using the non-linear partial differential equations of motions of the individual spins. Acc…
A new class of nodal stationary states in 2D Heisenberg ferromagnet
I. G. Bostrem, A. S. Ovchinnikov
A new class of nodal topological excitations in a two-dimensional Heisenberg model is studied. The solutions correspond to a nodal singular point of the gradient field of the azimu…