Abstract
We analyze the ultrafast demagnetization after ultrashort laser excitation by a kinetic model based on Elliott-Yafet scattering processes. By applying complete Boltzmann scattering integrals we trace the majority and minority electrons as well as phonons in the sample. Additionally, we allow for dynamical changes in the exchange splitting between majority and minority electrons. We find that our model has the potential to describe the magnetization dynamics and provides insights in the relaxation dynamics of the non-equilibrium electron system.
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Financial support of the Deutsche Forschungsgemeinschaft through the Emmy-Noether and Heisenberg Programm as well as the AHRP for providing the computational facilities is gratefully acknowledged.
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Mueller, B.Y., Cinchetti, M., Aeschlimann, M., Schneider, H.C., Rethfeld, B. (2015). Relaxation Dynamics of Majority and Minority Electrons After Ultrashort Laser Excitation. In: Bigot, JY., Hübner, W., Rasing, T., Chantrell, R. (eds) Ultrafast Magnetism I. Springer Proceedings in Physics, vol 159. Springer, Cham. https://doi.org/10.1007/978-3-319-07743-7_37
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DOI: https://doi.org/10.1007/978-3-319-07743-7_37
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