Magnetic Domain Wall Pumping by Spin Transfer Torque

Abstract

We show that spin transfer torque from direct spin-polarized current applied parallel to a magnetic domain wall (DW) induces DW motion in a direction independent of the current polarity. This unidirectional response of the DW to spin torque enables DW pumping: long-range DW displacement driven by alternating current. Our numerical simulations reveal that DW pumping can be resonantly amplified through excitation of internal degrees of freedom of the DW by the current.

References in corpus (8)

• Microscopic approach to current-driven domain wall dynamics
• Non-collinear Magnetoelectronics
• Magnetic domain-wall motion by propagating spin waves
• High domain wall velocities due to spin currents perpendicular to the plane
• Rapid Domain Wall Motion in Permalloy Nanowires Excited by Spin-Polarized Current Applied Perpendicular to the Nanowire
• Experimental Test of Analytic Theory of Spin Torque Oscillator Dynamics
• A spin-wave frequency doubler by domain wall oscillation
• High domain wall velocity at zero magnetic field induced by low current densities in spin-valve nanostripes

Cited by in corpus (6)

• Time-retarded damping and magnetic inertia in the Landau-Lifshitz-Gilbert equation self-consistently coupled to electronic time-dependent nonequilibrium Green functions
• Spin and charge pumping by steady or pulse current-driven magnetic domain wall: A self-consistent multiscale time-dependent-quantum/time-dependent-classical approach
• Theory of Linear Spin Wave Emission from a Bloch Domain Wall
• Periodic magnetization structures generated by transverse spin-current in magnetic nanowires
• Ultra-high differential mobility and velocity of Néel walls in spin valves with planar-transverse polarizers under low perpendicularly injected currents
• Stable finite energy global vortices and asymptotic freedom