Multiple field-induced phases in the frustrated triangular magnet Cs${}_3$Fe${}_2$Br${}_9$

D. Brüning, T. Fröhlich, D. Gorkov +13

The recently discovered material Cs${}_3$Fe${}_2$Br${}_9$ contains Fe${}_2$Br${}_9$ bi-octahedra forming triangular layers with hexagonal stacking along the $c$ axis. In contrast to isostruc…