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Phys Rev Lett. 2008 Feb 8;100(5):057206. Epub 2008 Feb 7.

Single-shot time-resolved measurements of nanosecond-scale spin-transfer induced switching: stochastic versus deterministic aspects.

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  • 1Institut d'Electronique Fondamentale, CNRS UMR 8622, Bât. 220, universitĂ© Paris-Sud, 91405 Orsay, France.

Abstract

Using high bandwidth resistance measurements, we study the single-shot response of tunnel junctions subjected to spin torque pulses. After the pulse onset, the switching proceeds by a ns-scale incubation delay during which the resistance is quiet, followed by a 400 ps transition terminated by a large ringing that is damped progressively. While the incubation delay fluctuates significantly, the resistance traces are reproducible once this delay is passed. After switching, the time-resolved resistance traces indicate micromagnetic configurations that are rather spatially coherent.

PMID:
18352422
DOI:
10.1103/PhysRevLett.100.057206
[PubMed]
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