Zero-field spin wave turns

journal article in Web of Science

English

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 degrees 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.

FERROMAGNETIC-FILMS; SPECTRUM

KLÍMA, J.; WOJEWODA, O.; ROUČKA, V.; MOLNÁR, T.; HOLOBRÁDEK, J.; URBÁNEK, M.

11. 3. 2024

AIP Publishing

MELVILLE

1077-3118

Applied Physics Letters

124

11

United States of America

6

https://pubs.aip.org/aip/apl/article/124/11/112404/3270785/Zero-field-spin-wave-turns