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Updated: May 31, 2026

Molecular Entanglement and Electrospinnability of Biopolymers
Published on: September 3, 2014
Spin transport and bipolaron density in organic polymers
P Ingenhoven1, R Egger, U Zülicke
1Institute of Fundamental Sciences and MacDiarmid Institute for Advanced Materials and Nanotechnology, Massey University (Manawatu Campus), Private Bag 11 222, Palmerston North 4442, New Zealand. Institut für Theoretische Physik, Heinrich-Heine-Universität, D-40225 Düsseldorf, Germany.
Abstract:
We present a theory for spin-polarized transport through a generic organic polymer connected to ferromagnetic leads with arbitrary angle θ between their magnetization directions, taking into account the polaron and bipolaron states as effective charge and spin carriers. Within a diffusive description of polaron-bipolaron transport including polaron-bipolaron conversion, we find that the bipolaron density depends on the angle θ. This is remarkable, given the fact that bipolarons are spinless quasiparticles, and opens a new way to probe spin accumulation in organic polymers.
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