Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2005-10-11
Phys. Rev. Lett. 97, 075701 (2006)
Physics
Condensed Matter
Soft Condensed Matter
12 pages, including 3 figures. This revised version covers the same as the original submission plus a discussion of the effect
Scientific paper
10.1103/PhysRevLett.97.075701
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 the high temperature liquid intersects the liquid-liquid coexistence line. The glass forming liquids are extraordinarily fragile. Our results suggest that Si and Ge liquids may be vitrified at a pressure close to the diamond-beta-tin-liquid triple point.
Angell Austen C.
Molinero Valeria
Sastry Srikanth
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