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Excitation Spectra of Disordered Systems. I. General Theory
Author(s) -
Chen Y. C.,
Wu ShiYu,
Sinai J. J.
Publication year - 1981
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.2221040206
Subject(s) - excitation , lattice (music) , statistical physics , physics , spectral line , theoretical physics , condensed matter physics , quantum mechanics , acoustics
The approximate method developed by Wu for the study of the lattice dynamics of one‐dimensional disordered systems is extended to be applicable to two‐ and three‐dimensional systems. The basic ideas of the approach are reviewed and the multi‐dimensional form of the approximation is developed. Applications are made to periodic lattices in all dimensions and the one‐dimensional disordered lattice. Comparisons with previous results show excellent agreement.