Power-law scaling of dynamical and structural signatures in liquid metallic nano-film

K Zhang and YY Jiang and H Li and PC Si and YF Li and HQ Yu and KM Liew and XG Song, EPL, 96, 46005 (2011).

DOI: 10.1209/0295-5075/96/46005

Structural and dynamical features of a liquid metallic nano-film during cooling are investigated by molecular dynamics simulations. Several unique structural transformations from liquid to nano-crystalline or glass are observed. Moreover, the crystalline fraction change and motion propensity are discussed in detail. Results indicate a close relation between the local structural ordering and the dynamic signature. We use a new parameter P(alpha, tau, nu) as an effective indicator for predicting both local structural order and motion propensity in a metallic nano-film, and find that the fraction of crystalline clusters follows a negative power-law scaling with the cooling rate increasing, which is the inverse of P(alpha, tau, nu). Copyright (C) EPLA, 2011

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