Dynamic nucleation of domain-chains in magnetic nanotracks*

Project supported by the National Natural Science Foundation of China (Grant No. 11704191), the Jiangsu Specially-Appointed Professor, the Natural Science Foundation of Jiangsu Province of China (Grant No. BK20171026), and the Six-Talent Peaks Project in Jiangsu Province, China (Grant No. XYDXX-038).

Jin Xiangjun, Li Yong, Ma Fusheng
       

(color online) Schematic diagram of investigated nanotrack for the nucleation of magnetic domain-chains. An microwave field Hy(t) was locally generated on the left end of the nanotrack by an antenna. The spin-polarized current was applied along the –x direction, and via spin-transfer torque causes the domain-chains to move parallel to the x axis. The colors encode the out-of-plane magnetization mz. Red (blue) region shows mz is positive (negative), the white area indicates the in-plane magnetization.