Strong correlations between spin, charge and orbital degrees of freedom play an important role in materials and a recent development of ultrafast spectroscopies enabled to disentangle these relevant degrees of freedom by their temporal evolution. Due to the complexity of non-equilibrium dynamics it has become necessary to exchange ideas between experimental and theoretical community. I will...
Intermetallics of type R Rh$_2$Si$_2$ (R is a rare earth) are antiferromagnets (AFM) with a Schokley surface state that becomes strongly spin-split in the AFM phase (up to 160 meV split). We study the coupling between the bulk AFM order and the surface spin polarization by probing the ultrafast dynamics of both properties in two complementary techniques. We use resonant X-ray diffraction...
