Interchain hopping of solitons and polarons in polyacetylene

Interchain hopping of solitons and polarons in polyacetylene is studied by numerical simulations of their motion under the electric field. The used model is the Su-Schrieffer-Heeger model supplemented with the intrachain electron-electron interaction and dopant potential. We find that charged solitons can hop to the opposite chain by forming a pair (bipolaron). For the case of polarons also hopping in a pair is more favorable than single polaron hopping. Interchain hopping of a polaron pair is more effective than that of a soliton pair.