Raman scattering from charge-density waves and application to polyacetylene

B. Horovitz, Z. Vardeny, E. Ehrenfreund, O. Brafman

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

Oscillations in an electronic gap formed by a charge-density wave are described in terms of Raman-active amplitude modes. In a multi-phonon system we find the Raman shifts and their intensity ratios in terms of a parameter A which contains all effects of electron- phonon, electron-electron and electron-disorder interactions; the single assumption in the theory is the adiabatic limit. The theory is compared with data on polyacetylene where the relation of A with the electronic gap yields information on the type of disorder. For an electron-phonon system an ab initio calculation of the Raman cross section is given and compared with more conventional calculations.

Original languageEnglish
Pages (from-to)7291-7305
Number of pages15
JournalJournal of Physics C: Solid State Physics
Volume19
Issue number36
DOIs
StatePublished - 30 Dec 1986

Fingerprint

Dive into the research topics of 'Raman scattering from charge-density waves and application to polyacetylene'. Together they form a unique fingerprint.

Cite this