Retardation effects on the Peierls phase

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Abstract

The mean field theory of the Peierls instability is extended to include the small momentum transfer interaction, which is shown to be a retarded interaction. The Peierls transition temperature is shown to depend significantly on the bare phonon frequency. A positive isotope shift parameter is predicted, with values in the range 0-0.5. It is also argued that the ratio of the zero temperature gap to the transition temperature is larger than the BCS value of 3.5.

Original languageEnglish
Pages (from-to)1001-1004
Number of pages4
JournalSolid State Communications
Volume19
Issue number10
DOIs
StatePublished - 1 Jan 1976
Externally publishedYes

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