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arXiv · 0906.2585

Ultrafast switching of a nanomagnet by a combined out-of-plane and in-plane polarized spin-current pulse

O. J. Lee·V. S. Pribiag·P. M. Braganca·P. G. Gowtham·D. C. Ralph·R. A. Buhrman
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Abstract

We report on spin valve devices that incorporate both an out-of-plane polarizer (OPP) to quickly excite spin torque (ST) switching and an in-plane polarizer/analyzer (IPP). For pulses < 200 ps we observe reliable precessional switching due largely to ST from the OPP. Compared to a conventional spin valve, for a given current in the short pulse regime the addition of the OPP can decrease the pulse width necessary for switching by a factor of 10 or more. The influence of the IPP is most obvious at longer, smaller pulses, but also has beneficial ST consequences for short pulse switching.

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O. J. Lee, V. S. Pribiag, P. M. Braganca, P. G. Gowtham, D. C. Ralph, R. A. Buhrman. 2009-06-15. Ultrafast switching of a nanomagnet by a combined out-of-plane and in-plane polarized spin-current pulse. https://doi.org/10.1063/1.3176938

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