Charge pumping in magnetic tunnel junctions: Scattering theory

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

Research output: Contribution to journalArticle

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 languageEnglish
Article number180407
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume77
Issue number18
DOIs
Publication statusPublished - 2008 May 22
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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