Projects per year
Abstract
Magnetic nanoelements attract great interest due to their prospects for data storage and signal processing. Spin-wave confinement in these elements implies wave-number quantization, discrete frequency spectra and thus complex resonance patterns, strongly dependent on the elements' geometry and static magnetic configuration. Here we report experimental observation of unconventional single-frequency resonance response of flat circular Permalloy nanodots, which is achieved via the application of a magnetic field at a certain critical angle
̃
𝜃
𝐵 with respect to the dot normal. This observation is explained as the merging of spin-wave eigenmodes under the transition of the spin-wave dispersion from the forward-volume to the backward-volume type, as elucidated by micromagnetic simulations in conjunction with an analytical theory. Our results offer a way for the creation of spin-wave systems with spectrally narrow magnetic noise.
̃
𝜃
𝐵 with respect to the dot normal. This observation is explained as the merging of spin-wave eigenmodes under the transition of the spin-wave dispersion from the forward-volume to the backward-volume type, as elucidated by micromagnetic simulations in conjunction with an analytical theory. Our results offer a way for the creation of spin-wave systems with spectrally narrow magnetic noise.
Original language | English |
---|---|
Article number | 014407 |
Number of pages | 8 |
Journal | Physical Review B |
Volume | 105 |
Issue number | 1 |
DOIs | |
Publication status | Published - 5 Jan 2022 |
Austrian Fields of Science 2012
- 103015 Condensed matter
- 103017 Magnetism
Projects
- 2 Finished
-
CurviMag: Curvature-induced effects in magnetic nanostructures
Dobrovolskiy, O. & Chumak, A.
1/01/21 → 31/12/23
Project: Research funding
-
MagFunc: Non-Reciprocal 3D Architectures for Magnonic Functionalities
Chumak, A., Dobrovolskiy, O., Wang, Q., Süss, D., Abert, C., Voronov, A. & Zenbaa, N.
1/10/20 → 30/09/24
Project: Research funding