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arXiv · 0801.1779

Charge pumping in magnetic tunnel junctions: Scattering theory

Jiang Xiao·Gerrit E. W. Bauer·Arne Brataas
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Abstract

We study theoretically the charge transport pumped by magnetization dynamics through epitaxial FIF and FNIF magnetic tunnel junctions (F: Ferromagnet, I: Insulator, N: Normal metal). We predict a small but measurable DC pumping voltage under ferromagnetic resonance conditions for collinear magnetization configurations, which may change sign as function of barrier parameters. A much larger AC pumping voltage is expected when the magnetizations are at right angles. Quantum size effects are predicted for an FNIF structure as a function of the normal layer thickness.

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Jiang Xiao, Gerrit E. W. Bauer, Arne Brataas. 2008-05-21. Charge pumping in magnetic tunnel junctions: Scattering theory. https://doi.org/10.1103/physrevb.77.180407

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