Title

An empirical potential for silicon under conditions of strong electronic excitation

Authors

Authors

L. Shokeen;P. K. Schelling

Comments

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Abbreviated Journal Title

Appl. Phys. Lett.

Keywords

MOLECULAR-DYNAMICS SIMULATION; Physics, Applied

Abstract

We present an empirical potential developed for silicon under conditions of strong electronic excitation. We show the essentially athermal nature of the melting transition when the electronic temperature is extremely high. The resulting liquid is shown to be distinct from ordinary liquid silicon. For less intense excitations, we determine the thermal melting temperature and demonstrate the possible existence of a regime where ordinary thermodynamic melting can occur but at a reduced temperature T(m). We show laser-induced softening of the lattice can lead to lattice cooling for very short time scales (similar to 100 fs), an effect never before recognized. (C) 2010 American Institute of Physics. [doi:10.1063/1.3499296]

Journal Title

Applied Physics Letters

Volume

97

Issue/Number

15

Publication Date

1-1-2010

Document Type

Article

Language

English

First Page

3

WOS Identifier

WOS:000283216900023

ISSN

0003-6951

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