The current-induced magnetic switching is studied in Co/Cu/Co nanopillar with an in-plane magnetization traversed under the perpendicular-to-plane external field.Magnetization switching is found to take place when the...The current-induced magnetic switching is studied in Co/Cu/Co nanopillar with an in-plane magnetization traversed under the perpendicular-to-plane external field.Magnetization switching is found to take place when the current density exceeds a threshold.By analyzing precessional trajectories,evolutions of domain walls and magnetization switching times under the perpendicular magnetic field,there are two different magnetization switching modes:nucleation and domain wall motion reversal;uniform magnetization reversal.The first mode occurs at lower current density,which is realized by the formation of the reversal nucleus and domain wall motion;while the second mode occurs through complete magnetization reversal at higher current density.Furthermore,the switching time reduces as the spin-polarized current density increases,which can also be grouped into two reversal modes.展开更多
基金supported by the National Natural Science Foundation of China (Grant No. 5042810)
文摘The current-induced magnetic switching is studied in Co/Cu/Co nanopillar with an in-plane magnetization traversed under the perpendicular-to-plane external field.Magnetization switching is found to take place when the current density exceeds a threshold.By analyzing precessional trajectories,evolutions of domain walls and magnetization switching times under the perpendicular magnetic field,there are two different magnetization switching modes:nucleation and domain wall motion reversal;uniform magnetization reversal.The first mode occurs at lower current density,which is realized by the formation of the reversal nucleus and domain wall motion;while the second mode occurs through complete magnetization reversal at higher current density.Furthermore,the switching time reduces as the spin-polarized current density increases,which can also be grouped into two reversal modes.
