Detection of soliton shape modes in polyacetylene
Abstract
We observed soliton shape modes by photoinduced absorption in partially isomerized (CH)x and (CD)x, coexisting with the soliton translational modes. The shape modes' ir activity, their dependence on the degree of isomerization, and the photoinduced spectra are explained in detail by a symmetry-breaking interaction which allows coupling of shape modes and translational modes. We also observed soliton shape-mode absorption in fully isomerized samples as phonon sidebands associated with optical transitions of neutral solitons above 1.5 eV.
- Publication:
-
Physical Review Letters
- Pub Date:
- December 1986
- DOI:
- 10.1103/PhysRevLett.57.2995
- Bibcode:
- 1986PhRvL..57.2995V
- Keywords:
-
- Absorption Spectra;
- Isomers;
- Polyacetylene;
- Solitary Waves;
- Oscillator Strengths;
- Photoabsorption;
- Raman Spectra;
- Solid-State Physics;
- 72.80.Le;
- 72.40.+w;
- 78.50.-w;
- Polymers;
- organic compounds;
- Photoconduction and photovoltaic effects