P Ingenhoven et al 2009 J. Phys.: Condens. Matter 21 415302 doi:10.1088/0953-8984/21/41/415302
P Ingenhoven1,2, R Egger2 and U Zülicke1,3
Show affiliationsWe 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.
72.25.Dc Spin polarized transport in semiconductors
75.60.Ej Magnetization curves, hysteresis, Barkhausen and related effects
Issue 41 (14 October 2009)
Received 2 May 2009
Published 23 September 2009
P Ingenhoven et al 2009 J. Phys.: Condens. Matter 21 415302
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