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On the Interatomic Correlations in Anharmonic Crystals
Author(s) -
Zubov V. I.,
Pascual M. F.,
Teixeira Rabelo J. N.
Publication year - 1993
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221750204
Subject(s) - anharmonicity , statistical physics , perturbation theory (quantum mechanics) , binary number , interatomic potential , nearest neighbour , perturbation (astronomy) , simple (philosophy) , correlation , physics , condensed matter physics , mathematics , quantum mechanics , molecular dynamics , geometry , computer science , philosophy , arithmetic , epistemology , artificial intelligence
A correlative method of unsymmetrized self‐consistent field is utilized to study the interatomic correlations in anharmonic crystals. Using the statistical perturbation theory up to second order the expression for binary correlations is derived. Corresponding diagrams are constructed and classified. As a simple application, the correlation moments are calculated for the one‐dimensional model.