Tunneling anisotropic magnetoresistance in organic spin valves

Details Tunneling anisotropic magnetoresistance in organic spin valves Tunneling anisotropic magnetoresistance in organic spin valves

2009-05-28

arxiv.org/abs/0905.4573v2

Physics

Condensed Matter

Materials Science

10 pages 5 figures Paper has been rewritten, new results have been added

Scientific paper

We report the observation of tunneling anisotropic magnetoresistance (TAMR) in an organic spin-valve-like structure with only one ferromagnetic electrode. The device is based on a new high mobility perylene diimide-based n-type organic semiconductor. The effect originates from the tunneling injection from the LSMO contact and can thus occur even for organic layers which are too thick to support the assumption of tunneling through the layer. Magnetoresistance measurements show a clear spin-valve signal, with the typical two step switching pattern caused by the magnetocrystalline anisotropy of the epitaxial magnetic electrode.

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