Wideband Brillouin light scattering analysis of spin waves excited by a white-noise RF generator

Flajšman, Lukáš; Wojewoda, Ondřej; Qin, Huajun; Davídková, Kristýna; Urbánek, Michal; Dijken, Sebastiaan van

doi:10.1063/5.0124764

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Lithography (Ebl) Techniques the Nanoresonators Can Be Place...1

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2023

2024

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Cited by 3 publications

(1 citation statement)

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“…To probe the nanoscale spin waves we used a standard phase-resolved micro-BLS setup [21], see Fig. 1(a).…”

Section: Lithography (Ebl) Techniques the Nanoresonators Can Be Place...mentioning

confidence: 99%

Phase-resolved optical characterization of nanoscale spin waves

Wojewoda¹,

Hrtoň²,

Dhankhar³

et al. 2023

Preprint

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“…To probe the nanoscale spin waves we used a standard phase-resolved micro-BLS setup [21], see Fig. 1(a).…”

Section: Lithography (Ebl) Techniques the Nanoresonators Can Be Place...mentioning

confidence: 99%

Phase-resolved optical characterization of nanoscale spin waves

Wojewoda¹,

Hrtoň²,

Dhankhar³

et al. 2023

Preprint

View full text Add to dashboard Cite

Phase-resolved optical characterization of nanoscale spin waves

Wojewoda

Hrtoň

Dhankhar

et al. 2023

Applied Physics Letters

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We study theoretically and experimentally the process of Brillouin light scattering on an array of silicon disks on a thin Permalloy layer. We show that phase-resolved Brillouin light scattering microscopy performed on an array of weakly interacting dielectric nanoresonators can detect nanoscale waves and measure their dispersion. In our experiment, we were able to map the evolution of the phase of the spin wave with a wavelength of 204 nm and a precision of 6 nm. These results demonstrate the feasibility of all-optical phase-resolved characterization of nanoscale spin waves.

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Zero-field spin wave turns

Klíma,

Wojewoda,

Roučka

et al. 2024

Applied Physics Letters

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Spin-wave computing, a potential successor to CMOS-based technologies, relies on the efficient manipulation of spin waves for information processing. While basic logic devices such as magnon transistors, gates, and adders have been experimentally demonstrated, the challenge for complex magnonic circuits lies in steering spin waves through sharp turns. In this study, we demonstrate with micromagnetic simulations and Brillouin light scattering microscopy experiments, that dipolar spin waves can propagate through 90° turns without distortion. The key lies in carefully designed in-plane magnetization landscapes, addressing challenges posed by anisotropic dispersion. The experimental realization of the required magnetization landscape is enabled by spatial manipulation of the uniaxial anisotropy using corrugated magnonic waveguides. The findings presented in this work should be considered in any magnonic circuit design dealing with anisotropic dispersion and spin wave turns.

show abstract

Wideband Brillouin light scattering analysis of spin waves excited by a white-noise RF generator

Cited by 3 publications

References 26 publications

Phase-resolved optical characterization of nanoscale spin waves

Phase-resolved optical characterization of nanoscale spin waves

Phase-resolved optical characterization of nanoscale spin waves

Zero-field spin wave turns

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