Microscopic model for the ground state, 1/3 plateau and excitations of $\gamma$-Mn${}_3$(PO${}_4$)${}_2$

P. A. Maksimov, L. V. Shvanskaya, O. S. Volkova +1

We present a magnetic model for an antiferromagnetic compound $\gamma$-Mn${}_3$(PO${}_4$)${}_2$, which was previously shown to exhibit a 1/3 magnetization plateau due to the trimer-based stru…