Coulomb splittings in glasses

S. W. De Leeuw, M. F. Thorpe

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Abstract

The equation-of-motion technique has been used to study the optic response functions of a computer-generated periodic random network containing 1536 ions. Long-range Coulomb effects were included for the first time. Our results show unambiguously the existence of an LO-TO splitting. The long-wavelength LO response function peaks at the band edge in the density of states and is very sharp, whereas the log-wavelength TO response function peaks at a lower frequency and is much broader.

Original languageEnglish (US)
Pages (from-to)2879-2882
Number of pages4
JournalPhysical Review Letters
Volume55
Issue number26
DOIs
StatePublished - Jan 1 1985

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

De Leeuw, S. W., & Thorpe, M. F. (1985). Coulomb splittings in glasses. Physical Review Letters, 55(26), 2879-2882. https://doi.org/10.1103/PhysRevLett.55.2879