Contributions from coherent and incoherent lattice excitations to ultrafast optical control of magnetic anisotropy of metallic films

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F16%3A10326174" target="_blank" >RIV/00216208:11320/16:10326174 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1117/12.2238020" target="_blank" >http://dx.doi.org/10.1117/12.2238020</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1117/12.2238020" target="_blank" >10.1117/12.2238020</a>

Result language
angličtina
Original language name
Contributions from coherent and incoherent lattice excitations to ultrafast optical control of magnetic anisotropy of metallic films
Original language 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.
Czech name
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Czech description
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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