Registration Number
0225U004985,
(0124U002047)
, R & D reports
Title
Controlling nonlinear processes in spintronic nanostructures
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Керована нелінійна динаміка спінтронних наноструктур
Head
Verba Roman V., Доктор фізико-математичних наук
Registration Date
23-12-2025
Organization
V.G. Baryakhtar Institute of Magnetism of the National Academy of Sciences of Ukraine (IMag NAS of Ukraine)
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A detailed study of ways for controlling nonlinear three- and four-magnon processes in single- and multi-layer magnetic nanostructures, as well as the development of methods of utilization of the revealed features for the extension of spintronics nanoelements functionality.
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The possibility of efficient control of the intensity and selection rules of three-magnon scattering processes by means of controlled magnetic state symmetry breaking has been demonstrated; for nanodots in a saturated state, the symmetry of the modes participating in the three-magnon process has been found to correspond to the symmetry of the perturbing field. A theory of three-magnon scattering of bulk spin waves on edge modes has been developed, and ways to control this process have been indicated. The functionality of a spin wave amplifier based on stimulated three-magnon scattering has been demonstrated. It has been established that mode hybridization in multilayer nanostructures can be an efficient mechanism for controlling four-magnon processes and, consequently, second-order parametric instability. The influence of nonlinear intermodal interaction on the dynamics of spintronic oscillators is established, and conditions for the realization of single-, two-mode, and bistable regimes of generation and dynamic switching of generation are formulated.
Product Description
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Yuliia I. Kharlan
Vladyslav Y. Borynskyi
Vladyslav Zamorskyi
Pavlo Y. Polynchuk
Roman R. Teslia
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2025-12-23
