Statics and adiabatic dynamics of nonlinear excitations in defected polyacetylene

Conference · Tue Jan 01 04:00:00 EST 1985

OSTI ID:5424969

Phillpot, S R; Baeriswyl, D; Bishop, A R; Lomdahl, P S

Within the Su, Schrieffer and Heeger model we have calculated, both analytically and numerically, the effects of model impurities on the electronic structure and lattice distortion of trans-polyacetylene. We find that the electron-phonon coupling may result in a fundamental alteration of the impurity level location. In simulated photoexcitation experiments on the defected system we find that, in addition to the kinks and breathers produced in the undefected system, ''trapped kinks'', excitons and polarons may also be produced. We suggest that the polarons produced in this novel way may be unusually stable and play an important role in hopping conduction mechanisms.

• Research Organization: Los Alamos National Lab., NM (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5424969
• Report Number(s): LA-UR-85-2055; CONF-8504157-2; ON: DE85014118
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360602* -- Other Materials-- Structure & Phase Studies
CRYSTAL DEFECTS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
ELECTRON-PHONON COUPLING
ELECTRONIC STRUCTURE
ENERGY-LEVEL TRANSITIONS
EXCITATION
HYDROCARBONS
ORGANIC COMPOUNDS
POLARONS
POLYACETYLENES
POLYENES
QUASI PARTICLES