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  • Unikandanunni, Vivek, et al. (author)
  • Anisotropic ultrafast spin dynamics in epitaxial cobalt
  • 2021
  • In: Applied Physics Letters. - : AIP Publishing. - 0003-6951 .- 1077-3118. ; 118:23
  • Journal article (peer-reviewed)abstract
    • We investigate the ultrafast spin dynamics in an epitaxial hcp(11⎯⎯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.
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Type of publication
journal article (1)
Type of content
peer-reviewed (1)
Author/Editor
Unikandanunni, Vivek (1)
Bonetti, Stefano (1)
Oppeneer, Peter M. (1)
Carva, Karel (1)
Fullerton, Eric E. (1)
Medapalli, Rajasekha ... (1)
University
Uppsala University (1)
Stockholm University (1)
Language
English (1)
Research subject (UKÄ/SCB)
Natural sciences (1)
Year
2021 (1)

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