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Time-resolved imaging of spin transfer switching: Beyond the macrospin concept

Acremann, Y and Strachan, J. P. and Chembrolu, V and Andrews, S. D. and Tyliszczak, T and Katine, J. A. and Carey, M. J. and Clemens, B. M. and Siegmann, H. C. and Stohr, J (2006) Time-resolved imaging of spin transfer switching: Beyond the macrospin concept. Physical Review Letters, 96 (21). p. 4. ISSN 0031-9007

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Official URL: http://ssrl.slac.stanford.edu/stohr/prl-96-217202-...

Abstract

Time-resolved images of the magnetization switching process in a spin transfer structure, obtained by ultrafast x-ray microscopy, reveal the limitations of the macrospin model. Instead of a coherent magnetization reversal, we observe switching by lateral motion of a magnetic vortex across a nanoscale element. Our measurements reveal the fundamental roles played independently by the torques due to charge and spin currents in breaking the magnetic symmetry on picosecond time scales.

Item Type:Article
Additional Information:26 AMERICAN PHYSICAL SOC 049GK
Uncontrolled Keywords:POLARIZED CURRENT; MAGNETIZATION REVERSAL; CO/CU/CO PILLARS; DRIVEN; MULTILAYER; EXCITATION; DYNAMICS
Subjects:Physical Science > Nanophysics
Physical Science > Nanomagnetics
ID Code:116
Deposited By:Lesley Tobin
Deposited On:07 Jan 2009 11:28
Last Modified:26 Mar 2009 12:16

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