55 citations · 276 across the 32 of their papers we have counts for
31 papers
Optimizing VQE Ansatz for Studying Tight-Binding Models with \textit{sd}-Interaction and On-Site Coulomb Repulsion
Oleg Udalov
The VQE algorithm is applied to the problem of finding the ground state of a lattice model with on-site Coulomb repulsion, nearest-neighbor hopping, and on-site sd-interaction. We…
Electric field manipulation of the Dzyaloshinskii-Moriya interacion in hybrid multiferroic structures
O. G. Udalov, R. V. Gorev, N. S. Gusev +2
Hybrid multiferroic films are fabricated by depositing of Pt/Co/Pt multilayers onto [001] and [110] cuts of PMN-PT crystal. The dependence of the interfacial Dzyaloshinskii-Moriya…
Electronic ferroelectricity and magneto-electric effect in phase separated magnetic oxidesElectronic ferroelectricity and magneto-electric effect in phase separated magnetic oxides
O. G. Udalov, I. S. Beloborodov
We consider phase separated states in magnetic oxides (MO) thin films. We show that these states have a non-zero electric polarization. Moreover, the polarization is intimately rel…
Stripe structures in phase separated magnetic oxides
O. G. Udalov, I. S. Beloborodov
We investigate the phase separated inhomogeneous charge and spin states in magnetic oxides. In particular, we study one dimensional harmonic waves and stripe structures. We show th…
Studying of the interlayer interaction in magnetic multilayers (FM/I/FM) measuring the FMR peak asymmetry
S. N. Vdovichev, N. S. Gusev, S. A. Gusev +8
We experimentally study the interlayer interaction in a magnetic multilayer system ferromagnet/insulator/ferromagnet with different spacer thickness. We demonstrate that the sign a…
Definition of the interlayer interaction type in magnetic multilayers analyzing the shape of the ferromagnetic resonance peaks
O. G. Udalov, A. A. Fraerman, E. S. Demidov
We present theoretical study of ferromagnetic resonance in a system of two coupled magnetic layers. We show that an interaction between the layers leads to the occurrence of the so…
Magneto-electric effect in doped magnetic ferroelectrics
O. G. Udalov, I. S. Beloborodov
We propose a model of magneto-electric effect in doped magnetic ferroelectrics. This magneto-electric effect does not involve the spin-orbit coupling and is based purely on the Cou…
Influence of image forces on the interlayer exchange interaction in magnetic tunnel junctions with ferroelectric barrier
O. G. Udalov, I. S. Beloborodov
We study interlayer exchange interaction in magnetic tunnel junctions with ferroelectric barrier. We focus on the influence of image forces on the voltage dependence of the interla…
Nuclear Magnetic Resonance in Noncollinear Antiferromagnet Mn3Al2Ge3O12
Aleksey M. Tikhonov, Nikolai G. Pavlov, Oleg G. Udalov
The 55Mn nuclear magnetic resonance spectrum of noncollinear 12-sublattice antiferromagnet Mn3Al2Ge3O12 has been studied in the frequency range of 200 - 640 MHz in the external mag…
Influence of image forces on the electron transport in ferroelectric tunnel junctions
O. G. Udalov, I. S. Beloborodov
We study influence of image forces on conductance of ferroelectric tunnel junctions. We show that the influence of image forces is twofold: i) they enhance the electro-resistance e…
Competition of the Coulomb and hopping based exchange interactions in granular magnets
O. G. Udalov, I. S. Beloborodov
We study exchange coupling due to the interelectron Coulomb interaction between two ferromagnetic grains embedded into insulating matrix. This contribution to the exchange interact…
Microscopic theory of the Coulomb based exchange coupling in magnetic tunnel junctions
O. G. Udalov, I. S. Beloborodov
We study interlayer exchange coupling (IEC) based on the many-body Coulomb interaction between conduction electrons in magnetic tunnel junction (MTJ). This mechanism complements th…
Influence of the Coulomb interaction on the exchange coupling in granular magnets
O. G. Udalov, I. S. Beloborodov
We develop a theory of the exchange interaction between ferromagnetic (FM) metallic grains embedded into insulating matrix by taking into account the Coulomb blockade effects. For…
Conductance of a SET with a retarded dielectric layer in the gate capacitor
O. G. Udalov, N. M. Chtchelkatchev, S. A. Fedorov +1
We study conductance of a single electron transistor (SET) with a ferroelectric (or dielectric) layer placed in the gate capacitor. We assume that ferroelectric (FE) has a retarded…
Competition of magneto-dipole, anisotropy and exchange interactions in composite multiferroics
A. M. Belemuk, O. G. Udalov, N. M. Chtchelkatchev +1
We study the competition of magneto-dipole, anisotropy and exchange interactions in composite three dimensional multiferroics. Using Monte Carlo simulations we show that magneto-di…
Single electron tunneling with "slow" insulators
S. A. Fedorov, N. M. Chtchelkatchev, O. G. Udalov +1
Usual paradigm in the theory of electron transport is related to the fact that the dielectric permittivity of the insulator is assumed to be constant, no time dispersion. We take i…
Nonreciprocal transmission of neutrons through the noncoplanar magnetic system
D. A. Tatarskiy, A. V. Petrenko, S. N. Vdovichev +3
We report on observation of the time reversal symmetry breaking in unpolarized neutrons scattering experiment. Neutron transmittivity through the system consisting of two magnetic…
Phenomenological theory of magneto-electric coupling in granular multiferroics
O. G. Udalov, N. M. Chtchelkatchev, I. S. Beloborodov
We study coupling between the ferroelectric polarization and magnetization of granular ferromagnetic film using a phenomenological model of combined multiferroic system consisting…
Memory effect in ferroelectric single electron transistor: violation of conductance periodicity in the gate voltage
S. A. Fedorov, A. E. Korolkov, N. M. Chtchelkatchev +2
The fundamental property of most single-electron devices with quasicontinuous quasiparticle spectrum on the island is the periodicity of their transport characteristics in the gate…
Proximity coupling of granular film with ferroelectric substrate and giant electro-resistance effect
O. G. Udalov, N. M. Chtchelkatchev, I. S. Beloborodov
We study electron transport in granular film placed above the ferroelectric substrate. We show that the conductivity of granular film strongly depends on the ferroelectric state du…
"Hall effect" for neutrons scattered by an A phase MnSi crystal
O. G. Udalov, A. A. Fraerman
We study a neutron diffraction by A phase of MnSi using a dynamical theory of diffraction and three wave approximation. We show that the neutron diffraction is asymmetrical with re…
Electric field control of magnetic properties and magneto-transport in composite multiferroics
O. G. Udalov, N. M. Chtchelkatchev, I. S. Beloborodov
We study magnetic state and electron transport properties of composite multiferroic system consisting of a granular ferromagnetic thin film placed above the ferroelectric substrate…
Interplay of ferroelectricity and single electron tunneling
S. A. Fedorov, A. E. Korolkov, N. M. Chtchelkatchev +2
We investigate the interplay of ferroelectricity and quantum electron transport at the nanoscale in the regime of Coulomb blockade. Ferroelectric polarization in this case is no lo…
Interplay of Coulomb Blockade and Ferroelectricity in Nano-Granular Materials
O. G. Udalov, N. M. Chtchelkatchev, A. Glatz +1
We study electron transport properties of composite ferroelectrics --- materials consisting of metallic grains embedded in a ferroelectric matrix. In particular, we calculate the c…