Realization of artificial skyrmion in CoCrPt/NiFe bilayers*

Project supported by the National Key Research and Development Program of China (Grant No. 2018YFF01010701), the National Natural Science Foundation of China (Grant No. 51332003), and the Sichuan Science and Technology Program, China (Grant No. 2018G20140).

Liu Yi1, 2, Luo Yong-Ming2, Qian Zheng-Hong1, 2, †, Zhu Jian-Guo1, ‡
       

(color online) (a)–(j) Magnetic moments’ distribution of CoCrPt layer in relaxation state without magnetic field. Panels (a) and (f) are the same as panel (c) of Fig. 2, and panel (b) of Fig. 3, respectively, panel (h) is the same as panel (b) of Fig. 2. Panels (a), (c), (f), and (j) show vortex structure and panels (b), (d), and (h) exhibit skyrmion structure. Panels (g) and (i) show the unstable magnetic configuration with the magnetic field of −200 mT and 220 mT, respectively. Panel (e) shows critical magnetic field of core/edge (green / red line) as a function of soft magnetic layer diameter.