Figure 3
From: Nucleation and annihilation of skyrmions in Mn2CoAl observed through the topological Hall effect
Minor loops are interpreted in terms of skyrmion formation and domain formation. Hall effect measurements at 225 K show both the AHE and THE. The Hall effect is saturated at positive field and the maximum negative field is progressively decreased to measure minor loops in (a–e). The loops shown in (a,c,e) are interpreted with cartoons in (f–h) respectively. The solid gray (white) areas represent the ferromagnetic state saturated in positive (negative) applied field, referred to in the text as FM + (FM −). Skyrmions are represented by gray (white) points, referred to as Sk + (Sk −) in the text. The colour corresponds to the assumed magnetization of the skyrmion core.
