Localized Phonons Associated with Solitons in Polyacetylene: Coupling to the Nonuniform Mode

Abstract

We report the observation of photoinduced infrared absorption due to the recently predicted localized phonons in trans-(CH)x and its deuterated analog (CD)x. The infrared activity results from coupling of the three lattice degrees of freedom to a soliton shape-modulation mode involving nonuniform translation of the soliton. Our results agree with the energies and weak oscillator strengths predicted for these new modes and for the related absorptions which result from coupling to the uniform translation of the soliton. This agreement provides confirmation of the accuracy and applicability of the electron-phonon model in describing the nonlinear soliton excitation in polyacetylene.

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Document Details

Document Type
Technical Report
Publication Date
Nov 15, 1987
Accession Number
ADA199478

Entities

People

  • A. J. Heeger
  • H. E. Schaffer
  • R. H. Friend

Organizations

  • University of California, Santa Barbara

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption
  • Absorption Spectra
  • Accuracy
  • Agreements
  • Band Gaps
  • Band Structures
  • Conductive Polymers
  • Crystal Lattices
  • Electrons
  • Energy Bands
  • Films
  • Frequency
  • Materials
  • Oscillators
  • Phonons
  • Spectra
  • Thin Films

Fields of Study

  • Physics

Readers

  • Materials Science and Engineering.
  • Optical Physics and Photonics.
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.

Technology Areas

  • Microelectronics