Detail publikace

Spin wave propagation in corrugated waveguides

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

5

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"
}