Charge pumping in magnetic tunnel junctions: Scattering theory
Materials Science
2009-11-13 v3
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.
Keywords
Cite
@article{arxiv.0801.1779,
title = {Charge pumping in magnetic tunnel junctions: Scattering theory},
author = {Jiang Xiao and Gerrit E. W. Bauer and Arne Brataas},
journal= {arXiv preprint arXiv:0801.1779},
year = {2009}
}
Comments
4 pages, 3 figures. to be published on Physical Review B Rapid Communication