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Ultrashort optical pulses applied to ferromagnets excite spin polarized hot electrons. Such an ultrashort-pulse excitation is followed by spin-flip scattering due to spin-orbit coupling, "intrinsic" magnetization dynamics and spin-polarized transport. I will present some of our work concerning the interplay of spin-flip scattering due to spin-orbit coupling and exchange scattering in a model system containing itinerant electrons which are exchange-coupled to localized electronic bands. I will also present results on spin-dependent transport of optically excited hot electrons in ferromagnet-metal heterostructures which have gained interest as THz emitters in recent years.
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Hans Christian Schneider, "Electronic Spin-Flips, Exchange Scattering and Transport in Ferromagnets: A model-system perspective," Proc. SPIE 11805, Spintronics XIV, 118050I (1 August 2021); https://doi.org/10.1117/12.2596027