Imaging of short-wavelength spin waves in a nanometer-thick YIG/Co bilayer

Talapatra, Abhishek; Qin, Huajun; Schulz, Frank; Yao, Lide; Flajšman, Lukáš; Weigand, Markus; Wintz, Sebastian; van Dijken, Sebastiaan

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Imaging of short-wavelength spin waves in a nanometer-thick YIG/Co bilayer

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Title:	Imaging of short-wavelength spin waves in a nanometer-thick YIG/Co bilayer
Author(s):	Talapatra, Abhishek ; Qin, Huajun ; Schulz, Frank ; Yao, Lide ; Flajšman, Lukáš ; Weigand, Markus ; Wintz, Sebastian ; van Dijken, Sebastiaan
Date:	2023-05-15
Language:	en
Pages:	6 1-6
Department:	Nanomagnetism and Spintronics Wuhan University Max Planck Institute for Intelligent Systems Department of Applied Physics Helmholtz Centre Berlin for Materials and Energy Department of Applied Physics
Series:	Applied Physics Letters, Volume 122, issue 20
ISSN:	0003-6951 1077-3118
DOI-number:	10.1063/5.0149583
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This publication is imported from Aalto University Research information portal: https://research.aalto.fi > View this publication in Research information portal > Other link related to publication (Research information portal)
Citation: Talapatra , A , Qin , H , Schulz , F , Yao , L , Flajšman , L , Weigand , M , Wintz , S & van Dijken , S 2023 , ' Imaging of short-wavelength spin waves in a nanometer-thick YIG/Co bilayer ' , Applied Physics Letters , vol. 122 , no. 20 , 202404 , pp. 1-6 . https://doi.org/10.1063/5.0149583
Abstract: We report the imaging of short-wavelength spin waves in a continuous nanometer-thick YIG film with a Co stripe patterned on top. Dynamic dipolar coupling between the YIG film and the Co stripe lowers the spin-wave wavelength when spin waves enter the YIG/Co bilayer region from the bare YIG film, causing partial reflection at the YIG/Co edge. We use time-resolved scanning transmission x-ray microscopy to image the mode conversion process down to a wavelength of 280 nm and extract the spin-wave dispersion, decay length, and magnetic damping in the YIG/Co bilayer. We also analyze spin-wave reflection from the YIG/Co edge and its dependence on the wavelength of incoming and transmitted spin waves.

Description: Funding Information: This work was supported by the Academy of Finland (Grant Nos. 317918, 325480, and 338748). Lithography and FIB milling were performed at the OtaNano-Micronova Nanofabrication Center and the OtaNano-NanoMicroscopy Center, respectively, supported by Aalto University. Computational resources were provided by the Aalto Science-IT project. We thank Helmholtz-Zentrum Berlin for the allocation of synchrotron radiation beamtime.
Permanent link to this item: http://urn.fi/URN:NBN:fi:aalto-202306073679 Email this Export to RefWorks QR Code Print BibTex Tweet