Ultrafast demagnetization of ferromagnetic transition metals: The role of the Coulomb interaction
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- 9 November 2009
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 80 (18) , 180407
Abstract
The Elliott-Yafet (EY) mechanism is arguably the most promising candidate to explain the light-induced ultrafast demagnetization dynamics in ferromagnetic transition metals on time scales on the order of 100 fs. So far, only electron-phonon (or impurity) scattering has been analyzed as the scattering process needed to account for the demagnetization. We show that an EY-like mechanism based on electron-electron scattering has the potential to explain time-resolved magneto-optical Kerr effect measurements on thin magnetic Co and Ni films, without reference to a “phononic spin bath.”Keywords
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