Electron-Magnon scattering in magnetic heterostructures (original) (raw)

Ultrafast magnetisation dynamics is commonly described by the Three Termperature Model. In the studied case, we have a system of s-electrons (itinerant) and d-electrons (magnons, i.e. responsible for the total magnetisation of the system). Their interaction, i.e. ultrafast spin dynamics, is analysed in terms of specific temperatures: Tm for magnons and Ts = Tup-Tdown for s-electrons. This allows to obtain a more physical picture of the dynamics of the system, since all the elements involved in the scattering process are fully expressed in terms of their temperature and chemical potential.