Modeling multiple time scales during glass formation with phase-field crystals |
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Authors: | Berry Joel Grant Martin |
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Institution: | Physics Department, McGill University, 3600 rue University, Montréal, Québec, Canada H3A 2T8. |
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Abstract: | The dynamics of glass formation in monatomic and binary liquids are studied numerically using a microscopic field theory for the evolution of the time-averaged atomic number density. A stochastic framework combining phase-field crystal free energies and dynamic density functional theory is shown to successfully describe several aspects of glass formation over multiple time scales. Agreement with mode coupling theory is demonstrated for underdamped liquids at moderate supercoolings, and a rapidly growing dynamic correlation length is found to be associated with fragile behavior. |
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