Tuning the Fragility of a Glass-Forming Liquid by Curving Space

Journal Article · Fri Oct 10 00:00:00 EDT 2008 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.101.155701· OSTI ID:21179804

Sausset, Francois; Tarjus, Gilles; Viot, Pascal ^[1]

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1. Laboratoire de Physique Theorique de la Matiere Condensee, Universite Pierre et Marie Curie-Paris 6, UMR CNRS 7600, 4 place Jussieu, 75252 Paris Cedex 05 (France)

We investigate the influence of space curvature, and of the associated frustration, on the dynamics of a model glass former: a monatomic liquid on the hyperbolic plane. We find that the system's fragility, i.e., the sensitivity of the relaxation time to temperature changes, increases as one decreases the frustration. As a result, curving space provides a way to tune fragility and make it as large as wanted. We also show that the nature of the emerging 'dynamic heterogeneities', another distinctive feature of slowly relaxing systems, is directly connected to the presence of frustration-induced topological defects.

• OSTI ID: 21179804
• Journal Information: Physical Review Letters, Vol. 101, Issue 15; Other Information: DOI: 10.1103/PhysRevLett.101.155701; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DEFECTS
GLASS
LIQUIDS
RELAXATION TIME
TOPOLOGY