Reentrant behavior and possible $2/3$ magnetization plateau on the double-trillium langbeinite K${}_2$Ni${}_2$(SO${}_4$)${}_3$

Matías G. Gonzalez, Matías G. Gonzalez, Yurii Skourski +3

K${}_2$Ni${}_2$(SO${}_4$)${}_3$ is a member of the langbeinite family, consisting of two intertwined $S=1$ trillium lattices, out of which one is strongly coupled (strong-TL) and the other…