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Type: Artigo de periódico
Title: Dynamical Motion Of Atoms In Surfaces: A Model Of W (100) As An Example
Author: Black J.E.
Laks B.
Mills D.L.
Abstract: For a model of the (100) surface of tungsten, we have studied the mean-square displacement of atoms and its anisotropy as a function of distance from the surface. In addition, we study correlations in the motion of nearest and next-nearest neighbors in and near the surface. These calculations employ the continued-fraction method to construct the relevant spectral densities. We assess the accuracy and efficiency of the method, and analysis of the structures in the various spectral-density functions provides insight into the modes which control displacement amplitudes and correlations in the surface. © 1980 The American Physical Society.
Rights: aberto
Identifier DOI: 10.1103/PhysRevB.22.1818
Date Issue: 1980
Appears in Collections:Unicamp - Artigos e Outros Documentos

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