Физика список научных статей
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Transport properties of GaAs Co-doped H-passivated low-buckled and high-buckled zigzag silicene nanoribbon two probe devices
In this study, we have investigated the transport properties of low bucked (LB) and high buckled (HB) silicene based two probe devices such as I–V characteristics, conductance, transmission spectrum and projected device density of states. Firstly, we have opened a bandgap in both LB and HB zigzag...
2023 / Asma N. Naqash, Khurshed A. Shah, Javid Ahmad Sheikh, Brijesh Kumbhani, Syed Muzaffar Ali AndrabiВАКESCI
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Structural, electrical, optical and phase investigation of perovskite barium zirconate (BaZrO3) nanoparticles prepared through auto-combustion technique
The BaZrO3 ceramics were prepared via sol-gel auto-combustion technique with three Fuel to Oxidant (F/O) ratios (ϕ = 0.5, 1.0 and 1.5) and annealed at 1200 ºC for 2 hours. X-ray diffraction (XRD) and Rietveld refinement data confirmed the cubic perovskite phase with the Pm3̅m (221) space group....
2023 / J. Abimalar, V. Anslin FerbyВАКESCI -
On the spectrum of the two-particle Schrödinger operator with point potential: one dimensional case
In the paper, a one-dimensional two-particle quantum system interacted by two identical point interactions is considered. The corresponding Schrödinger operator (energy operator) hε depending on ε is constructed as a self-adjoint extension of the symmetric Laplace operator. The main results of the...
2023 / Utkir Nematovich KuljanovВАКESCI -
Verification of continuum-based model of carbon materials
The continuous medium approximation to the description of a carbon material previously used to model the properties of spherical carbon shells of nanometer diameter. This approach is based on the transition from lattice operators to field operators. The present study verifies the given model...
2023 / Kirill B. TsiberkinВАКESCI -
Magnetic nanoparticles in solid matrices: formation and fixation of structures, induced by magnetic field
In this article, the structures formed by the action of the magnetic field to magnetite nanoparticles, embedded into transparent matrices from ferrofluids, were analyzed. As the matrices polyvinyl alcohol and epoxy resin were used, however, the results obtained may be applicable to other media, for ...
2023 / Ivan V. Pleshakov, Arseniy A. Alekseev, Efim E. Bibik, Valentin I. Dudkin, Tatiana Yu. Kudryashova, Elina K. Karseeva, Tatiana A. Kostitsyna, Ekaterina A. MedvedevaВАКESCI -
Synthesis of lanthanum manganite powders via combustion reactions: some aspects of the influence of magnetic field and charge generation in precursors on the formation of properties
The mutual influence of the process of electric charge generation in nitrate organic precursors and a constant external magnetic field on the magnetic properties formation was considered for lanthanum strontium manganite La0.7Sr0.3MnO3±y powders obtained via combustion reactions. The investigated...
2023 / Alexander A. Ostroushko, Iliya D. Gagarin, Egor V. Kudyukov, Tatiana Yu. Zhulanova, Anastasya E. Permyakova, Olga V. RusskikhВАКESCI -
Hidden polarization in open quantum systems
In this work, we explore the master equation governing open quantum systems dynamics in an alternative form, which preserves the normal-ordered representation of the averaged normal-ordered operators. We derive a linear system of differential equations for the fourth-order moments of corresponding...
2023 / Alexander D. Vatutin, George P. Miroshnichenko, Alexander I. TrifanovВАКESCI -
Molecular dynamics simulation of the rearrangement of polyampholyte conformations on the surface of a charged oblate metal nanospheroid in a microwave electric field
Using molecular dynamics, the rearrangement of the conformational structure of polyampholytes on the surface of a gold oblate nanospheroid in an alternating electric field was studied depending on the value of its total charge. On the surface of the nanospheroid, at its high total charge and at...
2023 / Nikita Yu. KruchininВАКESCI -
Molecular dynamics study of nanofluids viscosity with carbon tubes
The purpose of this paper is molecular dynamics simulation of viscosity of benzene-based nanofluids with carbon nanotubes, and carbon or copper nanoparticles. The nanotubes diameter and lengths were 1.1 nm and 1.1, 3.5, 7.2, 14.6 nm, respectively. The size of spherical nanoparticle was 1.39, 2.5,...
2024 / Valery Ya. Rudyak, Sergey L. Krasnolutskii, Evgeniy V. LezhnevВАКESCI -
Features of surface Bessel plasmon-polaritons in optical anisotropic hyperbolic metamaterials
The features of generation and properties of surface Bessel Plasmon-polaritons (SBPPs) in optical anisotropic hyperbolic metamaterials formed by a periodic lattice of metal nanowires made of gold and silver embedded into pores of aluminum oxide is studied. We investigate the influence of the...
2024 / Nguyen Van Vinh, Nguyen Pham Quynh AnhВАКESCI -
Extremely short optical pulses in a thin polymer film with carbon nanotubes
In this work, we study the dynamics of electromagnetic radiation in a thin polymer film containing carbon nanotubes. Maxwell’s equations are supplemented with a term that takes into account the presence of polymers in the medium. The dependence of the spatial-energy characteristics of the optical...
2024 / Sergey V. Belibikhin, Natalia N. KonobeevaВАКESCI -
Single-domain particles of manganese-for-iron substituted M-type barium hexaferrite: synthesis, crystal structure, and magnetic properties
Single-phase barium hexaferrite powders with crystallite sizes in a single-domain region and with the general composition BaFe12−xMnxO19, where x = 0, 2, 4, 6, were synthesized applying a citric sol-gel auto-combustion technique with final annealing temperatures of 900 – 1200 ºC. The crystal...
2024 / Pavel E. Kazin, Anastasia E. Sleptsova, Alexander V. Vasiliev, Artem A. Eliseev, Robert E. Dinnebier, Sebastian BetteВАКESCI -
Determining Young’s and shear moduli of a rod-shaped object in an AFM bending test
The technique of AFM bending test of a suspended nanoobject has been improved. An analytical method has been created for calculating Young’s and shear moduli of object’s material based on data of such tests. In Timoshenko approximation, we consider problems of bending a beam one or both ends of...
2024 / Alexander V. Ankudinov, Mikhail S. Dunaevskiy, Andrei A. Krasilin, Maksim M. Khalisov, Ekaterina K. KhrapovaВАКESCI -
Mathematical model of weakly coupled spherical resonator chains under the influence of external magnetic field
The Schrödinger operators with constant magnetic field in a bent chain and Y-type chain of coupled balls are considered. Coupling exists due to point-like openings at the touching points of neighbor spheres. The mathematical background of the model is the theory of self-adjoint extensions of...
2024 / Alina S. Melikhova, Anton I. Popov, Irina V. Blinova, Igor Y. PopovВАКESCI -
Photon antibunching in sixth harmonic generation
We studied photon antibunching in the pump and the harmonic modes of the sixth harmonic generation process. The generalized interaction Hamiltonian is solved for several particular cases in the Heisenberg picture, and the possibility of observing photon antibunching is investigated using the...
2024 / Rupesh Singh, Dilip Kumar GiriВАКESCI -
Nucleation of magnetic skyrmions at a notch
Magnetic skyrmions are considered promising candidates for coding bits of information in racetrack memory devices. Information recording in such devices is assumed to occur by creating skyrmions. This work is devoted to finding solutions to make this process as energy-efficient as possible. One of...
2024 / Maria N. Potkina, Igor S. LobanovВАКESCI -
Some features of the thermoelectric properties of the “metal-carbon film” junction
Carbon films were obtained by magnetron sputtering of graphite in an argon atmosphere on various metal substrates. As a result, a “metal-semiconductor” junction is formed due to the fact that the temperature dependence of the film resistance is of a semiconductor nature. The current-voltage...
2024 / Rostyslav V. Shalayev, Anatoliy I. Izotov, Vladimir V. SyrotkinВАКESCI -
Numerical model of temperature-dependent thermal conductivity inM1−xRxF2+x heterovalent solid solution nanocomposites where M stands for alkaline-earth metals and R for rare-earth metals
We propose a mathematical model to fit the temperature-dependent thermal conductivity of M1−xRxF2+x heterovalent solid solutions where M stands for alkaline-earth metals and R for rare-earth metals. These solid solutions experience composition-driven transition from the crystal-like to glass-like...
2024 / Pavel A. Popov, Alexander V. Shchelokov, Pavel P. FedorovВАКESCI -
Energy and spectral radius of Zagreb matrix of graph with applications
The Z-matrix of a simple graph Γ is a square symmetric matrix, whose rows and columns correspond to the vertices of the graph and the ijth entry is equal to the sum of the degrees of ith and jth vertex, if the corresponding vertices are adjacent in Γ, and zero otherwise. The Zagreb eigenvalues of Γ ...
2024 / Shashwath S. Shetty, K. Arathi BhatВАКESCI -
Preparation, structure and magnetic properties of the nanostructural Ni@C films obtained by magnetron deposition
Three series of films were obtained by magnetron sputtering of the composite C-Ni target with different ratios C/Ni (vol.%) = 60/40; 40/60; 30/70. The effect of the substrate temperature on the structure and the size of film-forming nickel nanocrystallites with a carbon shell was studied with using ...
2024 / Rostyslav V. Shalayev, Victor N. Varyukhin, A.I. Linnik, Vladimir V. Syrotkin, S.A. KostyryaВАКESCI
