Theory of spin injection

Details Theory of spin injection Theory of spin injection

2002-05-15

arxiv.org/abs/cond-mat/0205317v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 2 column REVTeX, to be published in Proceedings of Intern. Symposium on Mesoscopic Superconductivity and Spintronics

Scientific paper

Diffusive theory of spin injection is reviewed and a number of new results is presented for the dc and ac regimes. They were derived by means of the "gamma-technique" allowing to simplify the calculations by choosing the spin injection coefficients through different interfaces as the basic variables. The prospects for increasing spin injection by using resistive spin-selective contacts are emphasized and spin non-conserving contacts are introduced. Finding the basic parameters of a junction from the ac data is discussed.

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