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On the interatomic interaction potential that describes bond weakening in classical molecular-dynamic modelling

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Abstract

Rapid nonthermal melting can occur under the action of a supershort laser pulse in semiconductors. An attractive method for quantitatively describing the kinetics of such effects can be molecular-dynamic modelling, in which the interatomic potential depends on the parameters of the excited carriers. This paper discusses the properties that such a potential must possess. Based on a simple model for photoexcited carriers, it is shown that the condition of conservation of energy imposes definite requirements on the potential.

© 2014 Optical Society of America

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