Excitonic transverse and amplitude fluctuations in the noncollinear and charge-ordered RbFe${}^{2+}$Fe${}^{3+}$F${}_6$

H. Lane, M. Songvilay, R. A. Ewings +1

RbFe${}^{2+}$Fe${}^{3+}$F${}_6$ is an example of an antiferromagnet with charge ordering of the octahedrally coordinated Fe${}^{2+}$ and Fe${}^{3+}$ ions. As well as different spin values,…