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Nature 427, 821-824 (26 February 2004) | doi:10.1038/nature02325;

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Giant magnetoresistance in organic spin-valves

A spin valve is a layered structure of magnetic and non-magnetic (spacer) materials whose electrical resistance depends on the spin state of electrons passing through the device and so can be controlled by an external magnetic field. The discoveries of giant magnetoresistance and tunnelling magnetoresistance in metallic spin valves have revolutionized applications such as magnetic recording and memory, and launched the new field of spin electronics—|[lsquo]|spintronics|[rsquo]|.

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