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Interaction of moving discrete breathers with vacancies


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Autor: Cuevas-Maraver, Jesús
Archilla, Juan F. R.
Sánchez-Rey, Bernardo
Romero Romero, Francisco
Departamento: Universidad de Sevilla. Departamento de Física Aplicada I
Date: 2006
Publicado en: Physica D: Nonlinear Phenomena, 216 (1),115-120
Tipo de documento: Artículo
Abstract: In this paper a Frenkel–Kontorova model with a nonlinear int eraction potential is used to describe a vacancy defect in a crystal. According t o recent numerical results [Cuevas et al . Phys. Lett. A 315, 364 (2003)] the vacancy can migrate when it interacts with a moving breather. We study more thoroughl y the phenomenology caused by the interaction of moving breathers with a single v acancy and also with double vacancies. We show that vacancy mobility is strongly correlated with the existence and stability properties of stationary breather s centered at the particles adjacent to the vacancy, which we will now call vacancy breat hers.
Tamaño: 401.8Kb
Formato: PDF

URI: http://hdl.handle.net/11441/24785

DOI: 10.1016/j.physd.2005.12.022

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