Ultrafast signatures of spin and orbital order in antiferromagnetic α-Sr2CrO4

Abstract

Strongly correlated electron systems, such as the chromates, can exhibit a range of unique electronic configurations, the phase diagram of which can become even richer when considering non-equilibrium properties. Here, the authors apply ultrafast optical spectroscopy to α-Sr2CrO4 in order to investigate its spin and orbital ordering dynamics and the changes that occur when varying the pump photon energy.