A5067162339- Magnetic properties of thin films
- Magneto-Optical Properties and Applications
- Acoustic Wave Resonator Technologies
- Quantum and electron transport phenomena
- Nonlinear Dynamics and Pattern Formation
- Semiconductor Quantum Structures and Devices
- Mechanical and Optical Resonators
- Gyrotron and Vacuum Electronics Research
- Terahertz technology and applications
- Magnetic and transport properties of perovskites and related materials
- Advanced Memory and Neural Computing
- Multiferroics and related materials
- Physics of Superconductivity and Magnetism
- Magnetic Properties and Applications
- Neural Networks and Reservoir Computing
- Topological Materials and Phenomena
- Characterization and Applications of Magnetic Nanoparticles
- Photonic Crystals and Applications
- Advanced Control and Stabilization in Aerospace Systems
- Ferroelectric and Piezoelectric Materials
- Electric Power Systems and Control
- Molecular Junctions and Nanostructures
- Quantum Mechanics and Non-Hermitian Physics
- Magnetic Properties and Synthesis of Ferrites
- stochastic dynamics and bifurcation
Institute of Radio-Engineering and Electronics
2018-2024
Moscow Power Engineering Institute
2015-2024
Moscow Aviation Institute
2020-2024
Russian Academy of Sciences
2010-2024
Kazan State Power Engineering University
2020-2024
National Research University Higher School of Economics
2024
Kazan State Technical University named after A. N. Tupolev
2023
Moscow Institute of Physics and Technology
2023
Moscow Engineering Physics Institute
2020
Yaroslav-the-Wise Novgorod State University
2016-2020
Magnonics addresses the physical properties of spin waves and utilizes them for data processing. Scalability down to atomic dimensions, operation in GHz-to-THz frequency range, utilization nonlinear nonreciprocal phenomena, compatibility with CMOS are just a few many advantages offered by magnons. Although magnonics is still primarily positioned academic domain, scientific technological challenges field being extensively investigated, proof-of-concept prototypes have already been realized...
A concept of an electrically tunable resonance detector THz-frequency signals based on antiferromagnetic/heavy metal (AFM/HM) hetero-structure is proposed. The conversion a input signal into DC voltage done using the inverse spin Hall effect in bilayer. An additional bias current HM layer can be used to vary effective anisotropy AFM, and, therefore, tune AFMR frequency. proposed AFM/HM works as resonance-type quadratic which tuned by range at least 10 percent frequency and our estimations...
Abstract The interaction between the crystal lattice and spins appears to be a very efficient mechanism for non-thermal manipulation of magnetic order. A particularly intriguing question is whether vibrations can also used control or even switch domains in collinear antiferromagnets, where all other mechanisms fail. To answer this question, here we study effects induced by tunable narrow-band infrared optical pulses single crystals antiferromagnetic nickel oxide. Our measurements reveal that...
We introduce a theoretical model presenting PT-symmetric system of two planar coupled magnonic ferromagnetic (FM) waveguides covered by thin layers nonmagnetic metal with strong spin-orbit interaction [heavy (HM)]. The eigenvalues in systems change from real to complex at exceptional points. In magnonics, PT symmetry is achieved perfect balance the gain and loss spin waves. It possible control voltage exceptional-point appearance changing distance between waveguides. proposed has resonance...
Ferrimagnetic materials represent unique systems where the ease of manipulating spins with applied magnetic fields is combined exchange-driven acceleration internal spin dynamics. Of particular interest temperature range around and compensation points, finely balancing both moment angular momentum system, leading to a very character switching by domain wall motion. Here we present our studies temperature-dependent dynamics in covering magnetization points garnet film, reaching up Curie...
Диэлектрическая магноника — от гигагерцев к терагерцам, Никитов С.А., Сафин А.Р., Калябин Д.В., Садовников А.В., Бегинин Е.Н., Логунов М.В., Морозова М.А., Одинцов Осокин Шараевская А.Ю., Шараевский Ю.П., Кирилюк А.И.
It is shown theoretically that in a layered heterostructure comprising piezoelectric, dielectric antiferromagnetic crystal, and heavy metal (PZ/AFM/HM), it possible to control the anisotropy of AFM layer by applying dc voltage across PZ layer. In particular, we show varying and/or current HM, vary frequency resonance passive (subcritical) regime and, also, reduce threshold current-induced terahertz-frequency generation. Our analysis also shows that, unfortunately, voltage-induced reduction...
We present a theory of detector terahertz-frequency signals based on an antiferromagnetic (AFM) crystal. The conversion THz-frequency electromagnetic signal into the DC voltage is realized using inverse spin Hall effect in antiferromagnet/heavy metal bilayer. An additional bias magnetic field can be used to tune resonance frequency. show that if uniaxial AFM used, detection linearly polarized possible only for non-zero field, while circularly detected zero field. In contrast, biaxial without...
In this paper, we propose an approximate nonlinear theory of a spintronic terahertz-frequency emitter based on canted antiferromagnet-platinum bilayers. We present model accounting for the excitation oscillations Néel vector in antiferromagnet using terahertz pulses electromagnetic field. determine that, with increasing amplitude pumping pulse, spin system’s response increases nonlinearly fundamental quasiantiferromagnetic mode. demonstrate control trajectory by changing pulse peak and...
Antiferromagnetic (AFM) materials possess a well-recognized potential for ultrafast data processing thanks to their intrinsic spin dynamics, absence of stray fields, and large transport effects. The very same properties, however, make manipulation difficult, requiring frequencies in THz range magnetic fields tens Teslas. Switching AFM order implies going into the nonlinear regime, largely unexplored territory. Here we use light from free electron laser drive antiferromagnetic NiO highly...
Abstract Canted antiferromagnets offer great potential in fundamental research and for use applications due to their unique properties. The presence of the Dzyaloshinskii–Moriya interaction (DMI) leads existence a weak ferromagnetic moment at room temperature. We study both theoretically experimentally microwave spin pumping by quasi-ferromagnetic mode from canted easy plane antiferromagnet with ferromagnetism FeBO 3 . conversion signal into constant voltage is realized using inverse Hall...
In this paper the mutual phase locking theory of very nonidentical spin-torque nanooscillators, which is based on Slavin-Tiberkevich model, considering nonlinear oscillations, developed. Using generalized Adler equation we calculate phase-locking region system with spinwave coupling in parameter plane - distance between nanocontacts and radii difference. We describe trajectories such a space show effect broadband synchronization. introduce generalization approach to ensembles nanooscillators
A theory of an electrically controlled terahertz-frequency auto-oscillator is developed here within the framework antiferromagnetic sigma model. The structure based on a trilayer heterostructure: piezoelectric ceramic, NiO-based antiferromagnet (AFM), and heavy metal. authors demonstrate that frequency AFM resonance layered in passive subcritical regime can be by external electric field applied to piezoelectric, choosing proper material, magnitude current flowing
In this paper, we propose an approximate nonlinear theory of a phase-locked loop (PLL) the spin torque nano-oscillator (STNO). We study dynamics filterless PLL generating microwave oscillations in broad range frequencies under spin-polarized electrical current and external magnetic field. consider bifurcation analysis caused by change frequency detuning synchronized oscillations. determine bands phase locking quasi-synchronism, which basically distinguish STNOs from other types oscillators....
A concept of optically triggered and electrically controlled ultra-fast neuromorphic computing processor based on an antiferromagnetic/heavy metal (AFM/HM) heterostructure is proposed. The AFM/HM-based artificial neurons are excited with short THz-range pulses, triggering precession in AFM. Bias electric current the HM layer can be used to modify resonance frequency precession. conversion into HM-layer occurs via inverse spin Hall effect. model a is, thus, proposed, consisting excitatory...
In this work, we present the results of investigations performed on hematite (α-Fe2O3), which is an antiferromagnet with weak ferromagnetism. Through use Brillouin light scattering spectroscopy, studied experimentally excitation quasi-ferro- and antiferromagnetic modes in bulk hematite. We investigated influence relative mechanical strains, ϵyy, frequencies modes. Also, considered angular dependence frequency quasi-ferromagnetic mode external magnetic field. Our indicate that a suitable...
The shaping of composite consolidated plates into products is a complex process. To obtain defect-free product, we have to bear in mind that thermoplastics reinforced with fabric practically do not stretch, and their behavior determined by the mechanisms shear deformations within layer or between layers, processes sliding over surface tooling flexural rigidity plates. Due material during deformation, optimization thermoforming process trial error rather expensive implementation can be...
Today, we no longer have to prove the need for numerical evaluation of reliability in-plant power supply systems. There have been established generally accepted indices in form frequency various accidents and mathematical expectation undersupply electricity consumers, or decrease generation by plants. Factors are revealed factors that must be considered at analysis systems: availability repair switching circuits duration of main equipment equipment, failures devices relay protection and...