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Tuning of Tetrahedrality in a Silicon Potential Yields a Series of Monatomic (Metal-like) Glass Formers of Very High Fragility
We obtain monatomic glass formers in simulations by modifying the tetrahedral character in a silicon potential to explore a triple point zone between potentials favoring diamond (dc) and bcc crystals. dc crystallization is always preceded by a polyamorphic transformation of the liquid, and is frustrated when the Kauzmann temperature of …