Spin torque from tunneling through impurities in a magnetic tunnel junction

Turan Birol, Piet W. Brouwer

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

We calculate the contribution to the spin-transfer torque from sequential tunneling through impurities in a magnetic tunnel junction. For a junction with weakly polarized ferromagnetic contacts, the torque is found to be in the plane spanned by the magnetizations of the ferromagnetic contacts and proportional to sinθ, where θ is the angle between the magnetic moments. If the polarization is larger, the torque acquires a significant out-of-plane component and a different dependence on θ.

Original languageEnglish (US)
Article number014434
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume80
Issue number1
DOIs
StatePublished - Aug 6 2009

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