Charge pumping in magnetic tunnel junctions: Scattering theory

Title

Charge pumping in magnetic tunnel junctions: Scattering theory

 Author

Xiao, J.
Bauer, G.E.W.
Brataas, A.

Faculty

Applied Sciences

 Department

Kavli Institute of Nanoscience

 Date

2008-05-22

 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.

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 Publisher

American Physical Society

 ISSN

0163-1829

 Source

Physical Review B, 77 (18), 2008

 Part of collection

Institutional Repository

 Document type

journal article

 Rights

(c) 2008 The Author(s) ; American Physical Society
Files
PDF Xiao2_2008.pdf 174.15 KB
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