Single-shot time-resolved measurements of nanosecond-scale spin-transfer induced switching: stochastic versus deterministic aspects.
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.
Devolder
T
T
Institut d'Electronique Fondamentale, CNRS UMR 8622, Bât. 220, université Paris-Sud, 91405 Orsay, France.
Hayakawa
J
J
Ito
K
K
Takahashi
H
H
Ikeda
S
S
Crozat
P
P
Zerounian
N
N
Kim
Joo-Von
JV
Chappert
C
C
Ohno
H
H