Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5492099 | Physica B: Condensed Matter | 2017 | 5 Pages |
Abstract
Magnetic vortex dynamics mediated by spin-polarized ac current of different amplitudes and frequencies are investigated by micromagnetic simulations in a system lacking structure inversion symmetry. Micromagnetic calculations reveal that the critical current density required to induce vortex core reversal may be decreased to below 1010Â AÂ mâ2 due to strong transverse magnetic field by Rashba effect. We also find the spin torque of ac current plays a trivial role in magnetic vortex dynamics in a broken inversion symmetry system when the current density is on the order of 1010Â AÂ mâ2 and the current with frequency close to the vortex eigenfrequency is the most efficient for reversal.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Huanan Li, Zhong Hua, Dongfei Li,