Charge pumping in magnetic tunnel junctions

Scattering theory

Journal article (2008)
Department
Kavli Institute of Nanoscience (AS) (TU Delft)
Copyright: © 2008 The Author(s) ; American Physical Society
More Info
expand_more

Published Date

22-05-2008

Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Source:

Physical Review B, 77 (18), 2008

Faculty

Applied Sciences

Department

Kavli Institute of Nanoscience

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.

Files

Xiao2_2008.pdf
(pdf | 0.17 Mb)