Contributions from coherent and incoherent lattice excitations to ultrafast optical control of magnetic anisotropy of metallic films
Spin-lattice coupling is one of the most prominent interactions mediating response of spin ensemble to ultrafast optical excitation. Here we exploit optically generated coherent and incoherent phonons to drive coherent spin dynamics, i.e. precession, in thin films of magnetostrictive metal Galfenol....
| Main Authors: | , , , , , , , , , , |
|---|---|
| Format: | Article |
| Published: |
SPIE
2016
|
| Subjects: | |
| Online Access: | https://eprints.nottingham.ac.uk/39510/ |
| _version_ | 1848795853786972160 |
|---|---|
| author | Kats, Vladimir N. Linnik, Tatiana L. Salasyuk, Alexey S. Rushforth, Andrew W. Wang, Mu Wadley, Peter Akimov, Andrey V. Cavill, Stuart A. Holy, Vaclav Kalashnikova, Alexandra M. Scherbakov, Alexey V. |
| author_facet | Kats, Vladimir N. Linnik, Tatiana L. Salasyuk, Alexey S. Rushforth, Andrew W. Wang, Mu Wadley, Peter Akimov, Andrey V. Cavill, Stuart A. Holy, Vaclav Kalashnikova, Alexandra M. Scherbakov, Alexey V. |
| author_sort | Kats, Vladimir N. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Spin-lattice coupling is one of the most prominent interactions mediating response of spin ensemble to ultrafast optical excitation. Here we exploit optically generated coherent and incoherent phonons to drive coherent spin dynamics, i.e. precession, in thin films of magnetostrictive metal Galfenol. We demonstrate unambiguously that coherent phonons, also seen as dynamical strain generated due to picosecond lattice temperature raise, give raise to magnetic anisotropy changes of the optically excited magnetic film; and this contribution may be comparable to or even dominate over the contribution from the temperature increase itself, considered as incoherent phonons. |
| first_indexed | 2025-11-14T19:38:41Z |
| format | Article |
| id | nottingham-39510 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:38:41Z |
| publishDate | 2016 |
| publisher | SPIE |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-395102020-05-04T17:53:52Z https://eprints.nottingham.ac.uk/39510/ Contributions from coherent and incoherent lattice excitations to ultrafast optical control of magnetic anisotropy of metallic films Kats, Vladimir N. Linnik, Tatiana L. Salasyuk, Alexey S. Rushforth, Andrew W. Wang, Mu Wadley, Peter Akimov, Andrey V. Cavill, Stuart A. Holy, Vaclav Kalashnikova, Alexandra M. Scherbakov, Alexey V. Spin-lattice coupling is one of the most prominent interactions mediating response of spin ensemble to ultrafast optical excitation. Here we exploit optically generated coherent and incoherent phonons to drive coherent spin dynamics, i.e. precession, in thin films of magnetostrictive metal Galfenol. We demonstrate unambiguously that coherent phonons, also seen as dynamical strain generated due to picosecond lattice temperature raise, give raise to magnetic anisotropy changes of the optically excited magnetic film; and this contribution may be comparable to or even dominate over the contribution from the temperature increase itself, considered as incoherent phonons. SPIE 2016-07-01 Article PeerReviewed Kats, Vladimir N., Linnik, Tatiana L., Salasyuk, Alexey S., Rushforth, Andrew W., Wang, Mu, Wadley, Peter, Akimov, Andrey V., Cavill, Stuart A., Holy, Vaclav, Kalashnikova, Alexandra M. and Scherbakov, Alexey V. (2016) Contributions from coherent and incoherent lattice excitations to ultrafast optical control of magnetic anisotropy of metallic films. Proceedings of SPIE, 9835 (98351Q). pp. 1-5. ISSN 1996-756X laser-induced magnetization dynamics magnetostrictive materials magnetic anisotropy http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=2532769 doi:10.1117/12.2238020 doi:10.1117/12.2238020 |
| spellingShingle | laser-induced magnetization dynamics magnetostrictive materials magnetic anisotropy Kats, Vladimir N. Linnik, Tatiana L. Salasyuk, Alexey S. Rushforth, Andrew W. Wang, Mu Wadley, Peter Akimov, Andrey V. Cavill, Stuart A. Holy, Vaclav Kalashnikova, Alexandra M. Scherbakov, Alexey V. Contributions from coherent and incoherent lattice excitations to ultrafast optical control of magnetic anisotropy of metallic films |
| title | Contributions from coherent and incoherent lattice excitations to ultrafast optical control of magnetic anisotropy of metallic films |
| title_full | Contributions from coherent and incoherent lattice excitations to ultrafast optical control of magnetic anisotropy of metallic films |
| title_fullStr | Contributions from coherent and incoherent lattice excitations to ultrafast optical control of magnetic anisotropy of metallic films |
| title_full_unstemmed | Contributions from coherent and incoherent lattice excitations to ultrafast optical control of magnetic anisotropy of metallic films |
| title_short | Contributions from coherent and incoherent lattice excitations to ultrafast optical control of magnetic anisotropy of metallic films |
| title_sort | contributions from coherent and incoherent lattice excitations to ultrafast optical control of magnetic anisotropy of metallic films |
| topic | laser-induced magnetization dynamics magnetostrictive materials magnetic anisotropy |
| url | https://eprints.nottingham.ac.uk/39510/ https://eprints.nottingham.ac.uk/39510/ https://eprints.nottingham.ac.uk/39510/ |