Understanding temperature-dependent SU($3$) spin dynamics in the $S=1$ antiferromagnet Ba${}_2$FeSi${}_2$O${}_7$

Seung-Hwan Do, Hao Zhang, David A. Dahlbom +9

Quantum magnets admit more than one classical limit and $N$-level systems with strong single-ion anisotropy are expected to be described by a classical approximation based on SU($N…