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|Type:||Artigo de periódico|
|Title:||Dynamical Motion Of Atoms In Surfaces: A Model Of W (100) As An Example|
|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.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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