Anisotropic ultrafast spin dynamics in epitaxial cobalt

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F21%3A10430412" target="_blank" >RIV/00216208:11320/21:10430412 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=ysKD_l2SBf" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=ysKD_l2SBf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/5.0049692" target="_blank" >10.1063/5.0049692</a>

Result language
angličtina
Original language name
Anisotropic ultrafast spin dynamics in epitaxial cobalt
Original language description
We investigate the ultrafast spin dynamics in an epitaxial hcp(1 1 <mml:mo><overbar></mml:mover>00) cobalt thin film. By performing pump-probe magneto-optical measurements with the magnetization along either the easy or hard magnetic axis, we determine the demagnetization and recovery time for the two axes. We observe an average of 33% slower dynamics along the easy magnetization axis, which we attribute to magneto-crystalline anisotropy of the electron-phonon coupling, supported by our ab initio calculations. This points toward an unambiguous and previously undisclosed role of anisotropic electron-lattice coupling in ultrafast magnetism.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
<a href="/en/project/GA18-07172S" target="_blank" >GA18-07172S: Topical problems in theory of manipulation of spin polarization in bulk and layered systems</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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