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arXiv · 0903.1707

Spin transport and bipolaron density in organic polymers

P. Ingenhoven·R. Egger·U. Zülicke
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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.

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P. Ingenhoven, R. Egger, U. Zülicke. 2009-09-02. Spin transport and bipolaron density in organic polymers. https://doi.org/10.1088/0953-8984%2F21%2F41%2F415302

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