Registration Number
0223U005622,
(0122U002462)
, R & D reports
Title
Dynamic operation regimes of antiferromagnetic and hybrid spintronic nanostructures
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Розробка принципів створення нових спінтронних пристроїв на основі антиферомагнітних та гібридних наноструктур
Head
Verba Roman V., Доктор фізико-математичних наук
Registration Date
26-12-2023
Organization
Department for special training National academy of science of Ukraine at Kiev University
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Investigation of new dynamic operational modes and magnetic states of antiferromagnetic and hybrid spintronic nanostructures under the action of spin currents, DC and microwave magnetic fields, including metastable, quasi-regular and stochastic states, and development of principles of studied modes applications for the creation of novel functional spin-electronics devices.
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Stable multimode generation in spin-torque nanopillar-based oscillators has been found; the physical processes responsible for multimode generation was found to be the second-order parametric instability and the hybridization of free and fixed layers modes. The possibility of utilization of antiferromagnetic tunnel junctions in systems based on dielectric resonators as sources of terahertz radiation is analyzed, an output radiation power of the order of 1–10 μW for one junction is estimated. Appearance of stochastic dynamics in an antiferromagnetic spin-Hall oscillator with a time delay is demonstrated. A new mechanism of microwave signals amplification in a spin-torque oscillator is found; the mechanism is based on a partial phase-locking of autooscillations with an input signal under the condition of compensated nonlinear frequency shift.
Product Description
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Vladyslav Y. Borynskiy
Zamorskyi Vladyslav
Kovalenko Iryna G
Malyshev Volodymyr Yuriiovych
Polinchuk Pavlo Yu.
Prokopenko Volodymyr O
Prokopenko Ludmyla E.
Prokopenko Oleksandr Volodymyrovych
Romanjuk Olena V
Slobodianiuk Denys V.
Sotnyk Iryna O.
Chygryn Danil O.
Schtanko Oleg V.
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2023-12-26
