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Science. 2005 Jan 14;307(5707):228-31.

Time-domain measurements of nanomagnet dynamics driven by spin-transfer torques.

Author information

1
Cornell University, Ithaca, NY 14853, USA. ink3@cornell.edu

Abstract

We present time-resolved measurements of gigahertz-scale magnetic dynamics caused by torque from a spin-polarized current. By working in the time domain, we determined the motion of the magnetic moment throughout the process of spin-transfer-driven switching, and we measured turn-on times of steady-state precessional modes. Time-resolved studies of magnetic relaxation allow for the direct measurement of magnetic damping in a nanomagnet and prove that this damping can be controlled electrically using spin-polarized currents.

PMID:
15653496
DOI:
10.1126/science.1105722
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