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Ultrafast demagnetization of ferromagnetic transition metals: The role of the Coulomb interaction

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arxiv 0906.5104 v1 pith:FYEM4T4W submitted 2009-06-28 cond-mat.mtrl-sci cond-mat.other

Ultrafast demagnetization of ferromagnetic transition metals: The role of the Coulomb interaction

Michael Krauss , Tobias Roth , Sabine Alebrand , Daniel Steil , Mirko Cinchetti , Martin Aeschlimann , Hans Christian Schneider This is my paper
classification cond-mat.mtrl-sci cond-mat.other
keywords demagnetizationelliott-yafetmechanismscatteringexplainferromagneticmetalstransition
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The Elliott-Yafet mechanism is arguably the most promising candidate to explain the ultrafast demagnetization dynamics in ferromagnetic transition metals on timescales on the order of 100 femtoseconds. So far, only electron-phonon scattering has been analyzed as the scattering process needed to account for the demagnetization due to the Elliott-Yafet mechanism. We show for the first time that the electron-electron scattering contribution to the Elliott-Yafet mechanism has the potential to explain time-resolved magneto-optical Kerr effect measurements on thin magnetic cobalt and nickel films, without reference to a phononic "spin bath."

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