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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...
In van der Waals heterostructures of 2D transition‐metal dichalcogenides (2D TMDCs) electron and hole states are spatially localized in different layers forming long‐lived interlayer excitons. Here, the influence of additional electron or hole layers on the electronic properties of a MoS2/WSe2 heterobilayer (HBL), which is a direct bandgap material, is investigated from first principles. Additional...
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