Influence of interfacial magnons on spin transfer torque in magnetic tunnel junctions

A. Manchon, S. Zhang

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

The role of interfacial electron-magnon interaction in a noncollinear magnetic tunnel junction is investigated using the transfer Hamiltonian method. It is shown that the interfacial electron-magnon scattering modifies the bias dependence of both components of the spin-transfer torque. In particular, we find that at low temperature, the magnons emission adds a quadratic contribution and at finite temperature, both quadratic and linear terms appear. These contributions can explain recent experimental results on the bias dependence of spin-transfer torque.

Original languageEnglish (US)
Article number174401
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume79
Issue number17
DOIs
StatePublished - May 1 2009

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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