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. 2020 Aug 14;6(33):eaba4924. doi: 10.1126/sciadv.aba4924

Fig. 2. Chemisorbed oxygen–dependent chirality evolution.

Fig. 2

(A to F) Compound SPLEEM images of O/Ni(1 ML)/Co(3 ML)/Pd(2.76 ML)/W(110); oxygen coverages are labeled for each image. Scale bar, 2 μm. White arrows indicate the in-plane magnetization direction in the DW. (G) Oxygen coverage–dependent histogram of angle α between the DW magnetization m and the DW normal vector n, measured from (A) to (F), showing the evolution of chirality from left-handed Néel type to right-handed Néel type. (H) Oxygen coverage–dependent evolution of Néel-type chirality for different Pd thicknesses.