Spin motive forces due to magnetic vortices and domain walls

Abstract

We study spin motive forces, i.e, spin-dependent forces, and voltages induced by time-dependent magnetization textures, for moving magnetic vortices and domain walls. First, we consider the voltage generated by a one-dimensional field-driven domain wall. Next, we perform detailed calculations on field-driven vortex domain walls. We find that the results for the voltage as a function of magnetic field differ between the one-dimensional and vortex domain wall. For the experimentally relevant case of a vortex domain wall, the dependence of voltage on field around Walker breakdown depends qualitatively on the ratio of the so-called $\beta$-parameter to the Gilbert damping constant, and thus provides a way to determine this ratio experimentally. We also consider vortices on a magnetic disk in the presence of an AC magnetic field. In this case, the phase difference between field and voltage on the edge is determined by the $\beta$ parameter, providing another experimental method to determine this quantity.

8 pages, 9 figures, submitted to PRB

References in corpus (8)

• Microscopic approach to current-driven domain wall dynamics
• Electron Transport Driven by Nonequilibrium Magnetic Textures
• Dynamics of a vortex domain wall in a magnetic nanostrip: an application of the collective coordinate approach
• Time-Resolved X-ray Microscopy of Spin-Torque-Induced Magnetic Vortex Gyration
• Spin pumping by a field-driven domain wall
• Harmonic oscillator model for current- and field-driven magnetic vortices
• Spin Pumping of Current in Non-Uniform Conducting Magnets
• Effects of non-adiabaticity on the voltage generated by a moving domain wall

Cited by in corpus (7)

• Spin and charge pumping by steady or pulse current-driven magnetic domain wall: A self-consistent multiscale time-dependent-quantum/time-dependent-classical approach
• Spin motive force induced by Rashba interaction in the strong sd coupling regime
• Spinmotive force with static and uniform magnetization induced by a time-varying electric field
• Rashba-induced spin electromagnetic fields in a strong sd coupling regime
• Stability of Spinmotive Force in Perpendicularly Magnetized Nanowires under High Magnetic Fields
• Spin-motive force due to domain wall motion in the presence of Dzyaloshinskii-Moriya Interaction
• Coupling theory of emergent spin electromagnetic field and electromagnetic field