Ultrafast signatures of spin and orbital order in antiferromagnetic $\alpha$-Sr${}_2$CrO${}_4$

Min-Cheol Lee, Connor Occhialini, Jiarui Li +6

We used femtosecond optical spectroscopy to study ultrafast spin and orbital ordering dynamics in the antiferromagnetic Mott insulator $\alpha$-Sr${}_2$CrO${}_4$. This chromate system posse…