Danilov, A. P., Scherbakov, A. V., Glavin, B. A. et al. (9 more authors) (2018) Optically excited spin pumping mediating collective magnetization dynamics in a spin valve structure. Physical Review B. 060302. ISSN 2469-9969
Abstract
We demonstrate spin pumping, i.e., the generation of a pure spin current by precessing magnetization, without the application of microwave radiation commonly used in spin pumping experiments. We use femtosecond laser pulses to simultaneously launch the magnetization precession in each of two ferromagnetic layers of a galfenol-based spin valve and monitor the temporal evolution of the magnetizations. The spin currents generated by the precession cause a dynamic coupling of the two layers. This coupling has a dissipative character and is especially efficient when the precession frequencies in the two layers are in resonance, where coupled modes with strongly different decay rates are formed.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © 2018, American Physical Society. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details. |
Dates: |
|
Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) |
Depositing User: | Pure (York) |
Date Deposited: | 29 Aug 2018 11:30 |
Last Modified: | 16 Oct 2024 15:01 |
Published Version: | https://doi.org/10.1103/PhysRevB.98.060406 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1103/PhysRevB.98.060406 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:135083 |