Rapid Domain Wall Motion in Permalloy Nanowires Excited by Spin-Polarized Current Applied Perpendicular to the Nanowire

Abstract

We study domain wall (DW) dynamics in permalloy nanowires excited by alternating spin-polarized current applied perpendicular to the nanowire. Spin torque ferromagnetic resonance measurements reveal that DW oscillations at a pinning site in the nanowire can be excited with velocities as high as 800 m/s at current densities below 10${}^7$ A/cm${}^2$.

References in corpus (6)

• Microscopic approach to current-driven domain wall dynamics
• Spin-transfer-driven ferromagnetic resonance of individual nanomagnets
• Non-collinear Magnetoelectronics
• High domain wall velocities due to spin currents perpendicular to the plane
• Resonant Nonlinear Damping of Quantized Spin Waves in Ferromagnetic Nanowires
• High domain wall velocity at zero magnetic field induced by low current densities in spin-valve nanostripes

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