Solitons in Polyacetylene
W. P. Su, J. R. Schrieffer, Alan J. Heeger
Abstract
We present a theoretical study of soliton formation in long-chain polyenes, including the energy of formation, length, mass, and activation energy for motion. The results provide an explanation of the mobile neutral defect observed in undoped ${(\mathrm{CH})}_{x}$. Since the soliton formation energy is less than that needed to create band excitation, solitons play a fundamental role in the charge-transfer doping mechanism.
Topics & Concepts
PolyacetyleneSolitonDopingExcitationPhysicsCharge (physics)Energy transferAtomic physicsCondensed matter physicsBand gapChemical physicsMaterials scienceMolecular physicsParticle physicsQuantum mechanicsNonlinear systemConducting polymers and applicationsAnalytical Chemistry and SensorsOrganic Electronics and Photovoltaics