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

Research output: Contribution to journalArticle

41 Scopus citations

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 amplitude from ∼2 to 3 times the zero-thermal-fluctuation critical current (Ic0), the addition of the OPP can decrease the pulse width necessary for switching by a factor of 10 or more. The effect of the IPP also has beneficial ST consequences for the short pulse switching behavior.

Original languageEnglish (US)
Article number012506
JournalApplied Physics Letters
Volume95
Issue number1
DOIs
StatePublished - Jul 20 2009

Fingerprint Dive into the research topics of 'Ultrafast switching of a nanomagnet by a combined out-of-plane and in-plane polarized spin current pulse'. Together they form a unique fingerprint.

Cite this