Phenomenological Force Model for a Lattice from Experimental Phonon Spectra Appropriate to Lattice Distortion by Point Defects | Zendy

Chevychelov A. D. | Zendy; Lifshits I. L. | Zendy

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Phenomenological Force Model for a Lattice from Experimental Phonon Spectra Appropriate to Lattice Distortion by Point Defects

Author(s) -

Chevychelov A. D.,

Lifshits I. L.

Publication year - 1974

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.2220650107

Subject(s) - phonon , lattice (music) , vacancy defect , condensed matter physics , force constant , empty lattice approximation , reciprocal lattice , physics , materials science , particle in a one dimensional lattice , quantum mechanics , molecule , acoustics , diffraction

A general formal force model is constructed for a lattice with pair interactions between the atoms and appropriate to the problem of the point defects using group theory analysis. The pair interactions include bend and mixed parts. The concrete analysis is performed for cubic lattices. Numerical constants are chosen from experimental phonon dispersion curves. As an example of the application of the model the lattice distortion around a vacancy is calculated for copper.

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