Tuning of tetrahedrality in a silicon potential yields a series of monatomic (Metal-like) glass formers of very high fragility

Valeria Molinero, Srikanth Sastry, Charles Angell

Research output: Contribution to journalArticle

100 Citations (Scopus)

Abstract

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-β-tin-liquid triple point.

Original languageEnglish (US)
Article number075701
JournalPhysical Review Letters
Volume97
Issue number7
DOIs
StatePublished - 2006

Fingerprint

tuning
glass
silicon
liquids
metals
diamonds
tin
crystallization
crystals
simulation
temperature

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Tuning of tetrahedrality in a silicon potential yields a series of monatomic (Metal-like) glass formers of very high fragility. / Molinero, Valeria; Sastry, Srikanth; Angell, Charles.

In: Physical Review Letters, Vol. 97, No. 7, 075701, 2006.

Research output: Contribution to journalArticle

@article{08db7871a72d4d0fb90ce1b612b784c3,
title = "Tuning of tetrahedrality in a silicon potential yields a series of monatomic (Metal-like) glass formers of very high fragility",
abstract = "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-β-tin-liquid triple point.",
author = "Valeria Molinero and Srikanth Sastry and Charles Angell",
year = "2006",
doi = "10.1103/PhysRevLett.97.075701",
language = "English (US)",
volume = "97",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "7",

}

TY - JOUR

T1 - Tuning of tetrahedrality in a silicon potential yields a series of monatomic (Metal-like) glass formers of very high fragility

AU - Molinero, Valeria

AU - Sastry, Srikanth

AU - Angell, Charles

PY - 2006

Y1 - 2006

N2 - 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-β-tin-liquid triple point.

AB - 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-β-tin-liquid triple point.

UR - http://www.scopus.com/inward/record.url?scp=33747270686&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33747270686&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.97.075701

DO - 10.1103/PhysRevLett.97.075701

M3 - Article

AN - SCOPUS:33747270686

VL - 97

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 7

M1 - 075701

ER -