Fig. 1: Atomic and magnetic configurations of MnPS3 monolayer and bilayers.
From: Engineering altermagnetism via layer shifts and spin order in bilayer MnPS3
Top: Crystal structures of the MnPS3 monolayer, AA and \({{\rm{AA}}}^{{\prime} }\) bilayers. The two distinct sulfur planes (upper and lower) are highlighted in the monolayer structure to clarify how their relative alignment defines the AA and \({{\rm{AA}}}^{{\prime} }\) stacking geometries. In the \({{\rm{AA}}}^{{\prime} }\) geometry, the upper layer is inverted along the out-of-plane axis (z → − z). Bottom left and right: Local Mn coordination environments in AA and \({{\rm{AA}}}^{{\prime} }\) bilayers, respectively. Bottom center: Interlayer magnetic configurations derived from the antiferromagnetic monolayer. The bilayer can adopt either parallel AFM (↑↓/↑↓) or antiparallel AFM (↑↓/↓↑), each leading to distinct symmetry and magnetic phase behaviors.
