Search Results - "Panov, Yu. D"
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Critical Temperatures of a Model Cuprate
Published in Physics of metals and metallography (01-12-2019)“…The problem of competing orderings in the high-temperature cuprate materials is widely discussed for the last years. We present the mean-field approximation…”
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Phase Diagram of Semi-Hard-Core Bosons on a Square Lattice
Published in Physics of the solid state (01-09-2021)“…Phase diagrams of charged “semi-hard-core” bosons are studied in the mean field approximation. An increase in the parameter of local correlations is shown to…”
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3
Nature of the Pseudogap Phase of HTSC Cuprates
Published in Physics of the solid state (01-09-2020)“…The pseudogap phase of HTSC cuprates is associated with the formation of a system of quantum electron–hole (EH) dimers similar to the Anderson RVB phase. A…”
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Electron–Hole Dimers in the Parent Phase of Quasi–2D Cuprates
Published in Physics of the solid state (01-09-2019)“…The key feature of parent cuprates of the La 2 CuO 4 type, in addition to their high ionic polarizability and closeness to polarization catastrophe, is…”
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5
Specific Features of Phase States of a Diluted 2D Magnet with Frustration
Published in Physics of the solid state (01-09-2020)“…The properties of a dilute Ising magnet are studied using a two-dimensional spin–pseudospin model with charged impurities and a frustration caused by the…”
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Critical Temperatures of Hard-Core Boson Model on Square Lattice within Bethe Approximation
Published in Physics of the solid state (01-10-2021)“…Neighboring correlations are considered for a two-dimensional hard-core boson model on square lattice within Bethe approximation for the clusters consisting of…”
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Nontrivial Ground State Degeneracy of the Spin–Pseudospin Model of a Two-Dimensional Magnet Near the Frustration Point
Published in Physics of the solid state (01-10-2021)“…The classical Monte Carlo method is used to study the properties of the ground state and phase transitions of the spin–pseudospin model, which describes a…”
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8
Magnetocaloric Effect in Two-Dimensional Diluted Ising Model: Appearance of Frustrations in the Ground State
Published in Physics of the solid state (01-09-2020)“…The magnetocaloric effect in a two-dimensional Ising model is considered for different ratios between parameters of inter-site repulsion of nonmagnetic…”
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9
Unconventional spin-charge phase separation in a model 2D cuprate
Published in JETP letters (01-10-2017)“…In this work, we address a challenging problem of a competition of charge and spin orders for high- T c cuprates within a simplified 2D spin-pseudospin model…”
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10
Superconductivity in Model Cuprate as an S=1 Pseudomagnon Condensation
Published in Journal of low temperature physics (15-07-2019)“…We make use of the S = 1 pseudospin formalism to describe the charge degree of freedom in a model high- T c cuprate with the on-site Hilbert space reduced to…”
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11
The Ground-State Phase Diagram of 2D Spin–Pseudospin System
Published in Journal of low temperature physics (01-06-2017)“…High-Tc cuprates are characterized both by coexistence and competition of the spin and charge orders. We examine a simplified 2D model cuprate system where one…”
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12
The MFA ground states for the extended Bose-Hubbard model with a three-body constraint
Published in Physica. B, Condensed matter (01-05-2018)“…We address the intensively studied extended bosonic Hubbard model (EBHM) with truncation of the on-site Hilbert space to the three lowest occupation states…”
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13
Bethe Approximation for a Two-Dimensional Spin-Pseudospin System
Published in Physics of the solid state (01-09-2019)“…We have treated a two-dimensional spin-pseudospin model, which generalizes a diluted antiferromagnetic Ising model with charged nonmagnetic impurities in the…”
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14
Condensation of Pseudomagnons in a Two-Dimensional Anisotropic S = 1 Pseudospin System
Published in Physics of the solid state (01-11-2018)“…—A 2D anisotropic system of S = 1 centers of the charge triplet type in systems with variable valence or “semi-hard-core” boson systems with a limitation for…”
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15
Competition between the Spin and Pseudospin Subsystems in a Model Cuprate
Published in Physics of the solid state (01-05-2019)“…The competition between the magnetic and charge orderings in a model cuprate is considered in terms of a simplified static 2D spin–pseudospin model. This model…”
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16
Erratum to: Condensation of Pseudomagnons in a Two-Dimensional Anisotropic S = 1 Pseudospin System
Published in Physics of the solid state (2019)“…E-mail address of the corresponding author should read: e.vasinovich@gmail.com…”
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17
Competition of Spin and Charge Orders in a Model Cuprate
Published in Journal of low temperature physics (01-12-2016)“…We present results of the mean-field analysis of the competition between charge and spin orders in a model cuprate. Phase diagrams and temperature dependencies…”
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18
Charge order–superfluidity transition in a two-dimensional system of hard-core bosons and emerging domain structures
Published in Physics of the solid state (01-11-2017)“…We have used high-performance parallel computations by NVIDIA graphics cards applying the method of nonlinear conjugate gradients and Monte Carlo method to…”
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19
Influence of Local Correlations on the “Homogeneous Insulator–Superconductor” Transition in the Domain Boundaries of the Charge-Order Phase of a 2D System of a Mixed Valence
Published in Physics of the solid state (01-11-2018)“…—It is demonstrated in the (pseudo)spin S = 1 formalism that the structure of antiphase domain boundaries in the phase of charge ordering of a mixed-valence…”
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Local distributions of the 1D dilute Ising model
Published in Journal of magnetism and magnetic materials (15-11-2020)“…•Markov property allows finding the probability of any local distribution.•The lengths of repeating sequences obey the geometric probability distribution.•The…”
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