Current-induced magnetic vortex core switching in a Permalloy nanodisk
arXiv:cond-mat/0702048 · doi:10.1063/1.2780107
Abstract
We report on the switching of a magnetic vortex core in a sub-micron Permalloy disk, induced by a short current pulse applied in the film plane. Micromagnetic simulations including the adiabatic and non-adiabatic spin-torque terms are used to investigate the current-driven magnetization dynamics. We predict that a core reversal can be triggered by current bursts a tenth of a nanosecond long. The vortex core reversal process is found to be the same as when an external field pulse is applied. The control of a vortex core's orientation using current pulses introduces the technologically relevant possibility to address individual nanomagnets within dense arrays.
3 pages, 3 figures
References in corpus (1)
Cited by in corpus (5)
- Time-Resolved X-ray Microscopy of Spin-Torque-Induced Magnetic Vortex Gyration
- Switching magnetic vortex core by a single nanosecond current pulse
- Controlled vortex core switching in a magnetic nanodisk by a rotating field
- Current- and field-driven magnetic antivortices
- Switching phenomena in magnetic vortex dynamics