Charge pumping in magnetic tunnel junctions: Scattering theory

Jiang Xiao; Gerrit E.W. Bauer; Arne Brataas

doi:10.1103/PhysRevB.77.180407

Charge pumping in magnetic tunnel junctions: Scattering theory

Jiang Xiao, Gerrit E.W. Bauer, Arne Brataas

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

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 a 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.

Original language	English
Article number	180407
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	77
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevB.77.180407
Publication status	Published - 2008 May 22
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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Charge pumping in magnetic tunnel junctions: Scattering theory

Abstract

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