Ab initio ultrafast spin dynamics in solids

The authors develop first-principles real-time density-matrix approach to directly simulate ultrafast pump-probe measurements for coupled spin and electron dynamics of general solids over n00exs at any temperature and doping levels. The approach is based on Lindblad dynamics and includes complete first-principles descriptions of pump, probe, and scattering processes of electron-phonon, electron-impurity, and electron-electron scatterings with self-consistent spin-orbit coupling.