Spin accumulation in mesoscopic systems

Mark Johnson ()
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Mark Johnson: Naval Research Laboratory

Nature, 2002, vol. 416, issue 6883, 809-810

Abstract: Abstract In spintronics, in which use is made of the spin degree of freedom of the electron, issues concerning electrical spin injection and detection of electron spin diffusion are fundamentally important. Jedema et al. describe a magneto-resistance study in which they claim to have observed spin accumulation in a mesoscopic copper wire1, but their one-dimensional model ignores two-dimensional spin-diffusion effects, which casts doubt on their analysis. A two-dimensional vector formalism of spin transport2,3 is called for to model spin-injection experiments, and the identification of spurious background resistance effects is crucial.

Date: 2002
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DOI: 10.1038/416809a

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