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MSi2Z4 Monolayers
In article number 2206444, Agnieszka B. Kuc and co‐workers study from first‐principles monolayers of a new family of hexagonal MSi2Z4 compounds. These host 2D excitons with large response to magnetic field, with a broad range of g‐factors values, making them attractive for opto‐, spin‐ and valleytronic devices.
MA2Z4 monolayers form a new class of hexagonal non‐centrosymmetric materials hosting extraordinary spin‐valley physics. While only two compounds (MoSi2N4 and WSi2N4) are recently synthesized, theory predicts interesting (opto)electronic properties of a whole new family of such two‐dimensional (2D) materials. Here, the chemical trends of band gaps and spin‐orbit splittings of bands in selected MSi2...