Effect of nonadiabaticity and disorder on nonlinear optical susceptibilities

W. Z. Wang, Z. Shuai, A. Saxena, A. R. Bishop, J. L. Brédas

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


The effect of nonadiabaticity on optical linear polarizability (Formula presented) and third-order polarizability (Formula presented) is investigated numerically for a Holstein-Hubbard finite chain system. The variations of (Formula presented) and (Formula presented) are studied as a function of the nonadiabaticity parameter, electron-phonon coupling strength and electron-electron interactions. For a specific range of values of each of these parameters, (Formula presented) and (Formula presented) are significantly enhanced. Disorder in either electronic or phonon degrees of freedom is also found to enhance optical nonlinearity.

Original languageEnglish (US)
Pages (from-to)1697-1700
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number3
StatePublished - 1999
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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