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Superconducting dome by tuning through a van Hove singularity in a two-dimensional metal - npj 2D Materials and Applications
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Chemical substitution is a promising route for the exploration of a rich variety of doping- and/or disorder-dependent collective phenomena in low-dimensional quantum materials. Here we show that transition metal dichalcogenide alloys are ideal platforms to this purpose. In particular, we demonstrate the emergence of superconductivity in the otherwise metallic single-layer TaSe2 by minute electron doping provided by substitutional W atoms.
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