Phys. Rev. Lett. 91, 105701 (2003) [4 pages]Effect of Pressure Relaxation on the Mechanisms of Short-Pulse Laser MeltingReceived 4 March 2003; published 4 September 2003 The kinetics and microscopic mechanisms of laser melting of a thin metal film are investigated in a computational study that combines molecular dynamics simulations with a continuum description of the laser excitation and subsequent relaxation of the conduction band electrons. Two competing melting mechanisms, homogeneous nucleation of liquid regions inside the crystalline material and propagation of melting fronts from external surfaces, are found to be strongly affected by the dynamics of the relaxation of the laser-induced pressure. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.91.105701
DOI:
10.1103/PhysRevLett.91.105701
PACS:
64.70.Dv, 02.70.Ns, 61.80.Az, 79.20.Ds
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