Phase Coherent Precessional Magnetization Reversal in Microscopic Spin Valve Elements
Phase Coherent Precessional Magnetization Reversal in Microscopic Spin Valve Elements
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 …