Zhang, Zhi, Liu, Er, Lu, Xianyang et al. (12 more authors) (2021) Strain-Controlled Spin Wave Excitation and Gilbert Damping in Flexible Co2FeSi Films Activated by Femtosecond Laser Pulse. ADVANCED FUNCTIONAL MATERIALS. 2007211. ISSN 1616-301X
Abstract
The dynamic response of magnetic order to optical excitation at sub-picosecond scale has offered an intriguing alternative for magnetism manipulation. Such ultrafast optical manipulation of magnetism has become a fundamental challenging topic with high implications for future spintronics. Here, this study demonstrates such manipulation in Co2FeSi films grown on flexible polyimide substrate, and demonstrates how the magneto-optical interaction can be modified by using strain engineering which in turn triggers the excitation of both dipolar and exchange spin waves modes. Furthermore, Gilbert damping and spin-orbit coupling in Co2FeSi can both be tuned significantly by altering the magnitude and type of applied strain, suggesting an appealing way to manipulate spin wave propagation. These results develop the optical manipulation magnetism into the field of spin wave dynamics, and open a new direction in the application of spin orbitronics and magnonics devices using strain engineering.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | Funding Information: Z.Z., E.L., X.L., and W.Z. contributed equally to this work. This work was sponsored by the National Natural Science Foundation of China (51601093, 11974184, 11604148, and 61427812), the Fundamental Research Funds for the Central Universities (30916011345), the Key Research and Development Program of Jiangsu Province (BE2017102), and the Special Fund for the Transformation of Scientific and Technological Achievements in Jiangsu Province (BA2017121). W.Z. and P.K.J.W. are supported by the Fundamental Research Funds for the Central Universities. W.Z., P.K.J.W., and A.T.S.W. acknowledge the financial support from the Singapore Ministry of Education Tier 2 Grant (MOE2016‐T2‐2‐110). The authors would like to acknowledge the Singapore Synchrotron Light Source (SSLS) for providing the facility necessary for conducting the research. The Laboratory is a National Research Infrastructure under the National Research Foundation Singapore. © 2021 Wiley-VCH GmbH. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details |
Keywords: | Gilbert damping,spin waves,strain engineering,ultrafast optics,X-ray magnetic circular dichroism |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Computer Science (York) The University of York > Faculty of Sciences (York) > Electronic Engineering (York) The University of York > Faculty of Sciences (York) > Physics (York) The University of York > York Institute for Materials Research |
Depositing User: | Pure (York) |
Date Deposited: | 29 Apr 2021 14:49 |
Last Modified: | 04 Mar 2025 00:07 |
Published Version: | https://doi.org/10.1002/adfm.202007211 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1002/adfm.202007211 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:173539 |