Solid-liquid interface velocity and diffusivity in laser-melt amorphous silicon

Luigi Brambilla, Luciano Colombo, Vittorio Rosato, Fabrizio Cleri

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We studied the microscopic kinetics of the amorphous-liquid interface in supercooled laser-melt silicon by means of molecular dynamics computer simulations. The interface velocity was obtained as a function of temperature by direct simulation of the interface motion in an amorphous-liquid model system. The temperature dependence of the kinetic prefactor was extracted from the interface velocity function and compared to the values of self-diffusivity obtained from independent molecular dynamics simulations of bulk amorphous Si. The kinetic prefactor for interfacial diffusion shows a distinctly non-Arrhenius behavior which is attributed to Fulcher-Vogel kinetics in the supercooled liquid. © 2000 American Institute of Physics.
Original languageEnglish
Pages (from-to)2337 - 2339
Number of pages3
JournalApplied Physics Letters
Issue number15
Publication statusPublished - 9 Oct 2000
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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