Search academic texts

Information × Registration Number 0223U005622, 0122U002462 , R & D reports Title Dynamic operation regimes of antiferromagnetic and hybrid spintronic nanostructures popup.stage_title 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 popup.description2 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 popup.authors 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. popup.nrat_date 2023-12-26 Close