Statics and adiabatic dynamics of nonlinear excitations in defected polyacetylene

Conference · Tue Jan 01 00:00:00 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 Laboratory (LANL), Los Alamos, NM (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5424969
• Report Number(s): LA-UR-85-2055; CONF-8504157-2; ON: DE85014118
• Resource Relation: Conference: Synthetic metals III workshop, Los Alamos, NM, USA, 9 Apr 1985
• Country of Publication: United States
• Language: English

Related Subjects

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