Phase coherent precessional magnetization reversal in microscopic spin valve elements
HW Schumacher, C Chappert, P Crozat, RC Sousa… - Physical review …, 2003 - APS
Physical review letters, 2003•APS
We evidence multiple coherent precessional magnetization reversal in microscopic spin
valves. Stable, reversible, and highly efficient magnetization switching is triggered by
transverse field pulses as short as 140 ps with energies down to 15 pJ. At high fields a
phase coherent reversal is found revealing periodic transitions from switching to
nonswitching under variation of pulse parameters. At the low field limit the existence of a
relaxation dominated regime is established allowing switching by pulse amplitudes below …
valves. Stable, reversible, and highly efficient magnetization switching is triggered by
transverse field pulses as short as 140 ps with energies down to 15 pJ. At high fields a
phase coherent reversal is found revealing periodic transitions from switching to
nonswitching under variation of pulse parameters. At the low field limit the existence of a
relaxation dominated regime is established allowing switching by pulse amplitudes below …
We evidence multiple coherent precessional magnetization reversal in microscopic spin valves. Stable, reversible, and highly efficient magnetization switching is triggered by transverse field pulses as short as 140 ps with energies down to 15 pJ. At high fields a phase coherent reversal is found revealing periodic transitions from switching to nonswitching under variation of pulse parameters. At the low field limit the existence of a relaxation dominated regime is established allowing switching by pulse amplitudes below the quasistatic switching threshold.
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