2012/10/12 by Alexander A. Choi, A. Choi, Kyung Ho Kim +20
Engineering · Materials Science · Physics and Astronomy · #Advanced Memory and Neural Computing #Conducting polymers and applications #Organic Electronics and Photovoltaics #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.86.155423
published as Physical Review B, 86, 155423 (2012)
openalex publication_date 2012/10/12 · arxiv created 2012/10/17 · arxiv updated 2012/10/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Polymer nanofibers are one-dimensional organic hydrocarbon systems containing conducting polymers where the nonlinear local excitations such as solitons, polarons, and bipolarons formed by the electron-phonon interaction were predicted. Magnetoconductance (MC) can simultaneously probe both the spin and charge of these mobile species and identify the effects of electron-electron interactions on these nonlinear excitations. Here, we report our observations of a qualitatively different MC in polyacetylene (PA) and in polyaniline (PANI) and polythiophene (PT) nanofibers. In PA, the MC is essentially zero, but it is present in PANI and PT. The universal scaling behavior and the zero (finite) MC in PA (PANI and PT) nanofibers provide evidence of Coulomb interactions between spinless charged solitons (interacting polarons which carry both spin and charge).