Optically excited spin pumping mediating collective magnetization dynamicsin a spin valve structure
We demonstrate spin pumping, i.e. the generation of a pure spin current by precessing magnetization, without 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 ferromagneti...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
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American Physical Society
2018
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| Online Access: | https://eprints.nottingham.ac.uk/53114/ |
| _version_ | 1848798881291173888 |
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| author | Danilov, A.P. Scherbakov, A.V. Glavin, B.A. Linnik, T.L. Kalashnikova, A.M. Shelukhin, L.A. Pattnaik, D.P. Rushforth, A.W. Love, C.J. Cavill, S.A. Yakovlev, D.R. Bayer, M. |
| author_facet | Danilov, A.P. Scherbakov, A.V. Glavin, B.A. Linnik, T.L. Kalashnikova, A.M. Shelukhin, L.A. Pattnaik, D.P. Rushforth, A.W. Love, C.J. Cavill, S.A. Yakovlev, D.R. Bayer, M. |
| author_sort | Danilov, A.P. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | We demonstrate spin pumping, i.e. the generation of a pure spin current by precessing magnetization, without 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 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. |
| first_indexed | 2025-11-14T20:26:49Z |
| format | Article |
| id | nottingham-53114 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T20:26:49Z |
| publishDate | 2018 |
| publisher | American Physical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-531142020-05-04T19:47:02Z https://eprints.nottingham.ac.uk/53114/ Optically excited spin pumping mediating collective magnetization dynamicsin a spin valve structure Danilov, A.P. Scherbakov, A.V. Glavin, B.A. Linnik, T.L. Kalashnikova, A.M. Shelukhin, L.A. Pattnaik, D.P. Rushforth, A.W. Love, C.J. Cavill, S.A. Yakovlev, D.R. Bayer, M. We demonstrate spin pumping, i.e. the generation of a pure spin current by precessing magnetization, without 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 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. American Physical Society 2018-08-08 Article PeerReviewed Danilov, A.P., Scherbakov, A.V., Glavin, B.A., Linnik, T.L., Kalashnikova, A.M., Shelukhin, L.A., Pattnaik, D.P., Rushforth, A.W., Love, C.J., Cavill, S.A., Yakovlev, D.R. and Bayer, M. (2018) Optically excited spin pumping mediating collective magnetization dynamicsin a spin valve structure. Physical Review B, 98 (6). 060406. ISSN 2469-9969 https://journals.aps.org/prb/pdf/10.1103/PhysRevB.98.060406 doi:10.1103/PhysRevB.98.060406 doi:10.1103/PhysRevB.98.060406 |
| spellingShingle | Danilov, A.P. Scherbakov, A.V. Glavin, B.A. Linnik, T.L. Kalashnikova, A.M. Shelukhin, L.A. Pattnaik, D.P. Rushforth, A.W. Love, C.J. Cavill, S.A. Yakovlev, D.R. Bayer, M. Optically excited spin pumping mediating collective magnetization dynamicsin a spin valve structure |
| title | Optically excited spin pumping mediating collective magnetization dynamicsin a spin valve structure |
| title_full | Optically excited spin pumping mediating collective magnetization dynamicsin a spin valve structure |
| title_fullStr | Optically excited spin pumping mediating collective magnetization dynamicsin a spin valve structure |
| title_full_unstemmed | Optically excited spin pumping mediating collective magnetization dynamicsin a spin valve structure |
| title_short | Optically excited spin pumping mediating collective magnetization dynamicsin a spin valve structure |
| title_sort | optically excited spin pumping mediating collective magnetization dynamicsin a spin valve structure |
| url | https://eprints.nottingham.ac.uk/53114/ https://eprints.nottingham.ac.uk/53114/ https://eprints.nottingham.ac.uk/53114/ |