Spin transport and bipolaron density in organic polymers
Mesoscale and Nanoscale Physics
2009-09-23 v2 Materials Science
Abstract
We present a theory for spin-polarized transport through a generic organic polymer connected to ferromagnetic leads with arbitrary angle theta 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 theta. This is remarkable, given the fact that bipolarons are spinless quasiparticles, and opens a new way to probe spin accumulation in organic polymers.
Keywords
Cite
@article{arxiv.0903.1707,
title = {Spin transport and bipolaron density in organic polymers},
author = {P. Ingenhoven and R. Egger and U. Zülicke},
journal= {arXiv preprint arXiv:0903.1707},
year = {2009}
}
Comments
9 pages, 2 figures, IOP style