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TURČAN, I. FLAJŠMAN, L. WOJEWODA, O. ROUČKA, V. MAN, O. URBÁNEK, M.
Originální název
Spin wave propagation in corrugated waveguides
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
angličtina
Originální abstrakt
Curvature-induced effects allow us to tailor the static and dynamic response of a magnetic system with a high degree of freedom. We study corrugated magnonic waveguides deposited on a sinusoidally modulated substrate prepared by focused electron beam-induced deposition. The curvature of the waveguides with thicknesses comparable to the amplitude of modulation modifies the contributions of dipolar and exchange energies and results in an effective anisotropy term, which is strong enough to overcome the shape anisotropy. At zero external magnetic field, the magnetization of the waveguide then points perpendicular to its long axis in a geometry, which is best-suited to spin-wave propagation. We show, by Brillouin light scattering microscopy, that without the presence of the external magnetic field, spin waves propagate over a distance 10xlarger in the corrugated waveguide than in the planar waveguide. We further analyze the influence of the modulation amplitude on the spin-wave propagation length and conclude that for moderate modulation amplitudes, the spin-wave decay length is not affected. For larger amplitudes, the decay length decreases linearly with increasing modulation. The presented approach opens many possibilities for the design of complex 2D magnonic circuits where the waveguides can be oriented in any direction and placed anywhere on the sample while still allowing spin-wave propagation with the same efficiency.
Klíčová slova
Anisotropy; Brillouin scattering; Degrees of freedom (mechanics); Magnetic fields; Modulation; Wave propagation; Waveguides
Autoři
TURČAN, I.; FLAJŠMAN, L.; WOJEWODA, O.; ROUČKA, V.; MAN, O.; URBÁNEK, M.
Vydáno
1. 3. 2021
Nakladatel
AIP Publishing
Místo
MELVILLE
ISSN
1077-3118
Periodikum
Applied Physics Letters
Ročník
118
Číslo
9
Stát
Spojené státy americké
Strany od
1
Strany do
5
Strany počet
URL
https://aip.scitation.org/doi/10.1063/5.0041138
Plný text v Digitální knihovně
http://hdl.handle.net/11012/201153
BibTex
@article{BUT171712, author="Igor {Turčan} and Lukáš {Flajšman} and Ondřej {Wojewoda} and Václav {Roučka} and Ondřej {Man} and Michal {Urbánek}", title="Spin wave propagation in corrugated waveguides", journal="Applied Physics Letters", year="2021", volume="118", number="9", pages="1--5", doi="10.1063/5.0041138", issn="1077-3118", url="https://aip.scitation.org/doi/10.1063/5.0041138" }