Optimization of spin-torque switching using AC and DC pulses

Tom Dunn, Alex Kamenev

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

We explore spin-torque induced magnetic reversal in magnetic tunnel junctions using combined AC and DC spin-current pulses. We calculate the optimal pulse times and current strengths for both AC and DC pulses as well as the optimal AC signal frequency, needed to minimize the Joule heat lost during the switching process. The results of this optimization are compared against numeric simulations. Finally, we show how this optimization leads to different dynamic regimes, where switching is optimized by either a purely AC or DC spin-current, or a combination AC/DC spin-current, depending on the anisotropy energies and the spin-current polarization.

Original languageEnglish (US)
Article number233906
JournalJournal of Applied Physics
Volume115
Issue number23
DOIs
StatePublished - Jun 21 2014

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