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May, 2022

Unusual humps in Hall effect measurements are often interpreted as a ‘topological Hall effect’ and thought to be a Hall-mark of chiral spin textures such as magnetic skyrmions. However, similar signals can result from sample inhomogeneity or experimental issues. This review discusses these ambiguities and the challenges in topological Hall effect measurements.

Image caption: A skyrmion, a chiral magnetic bubble with possible applications in future computing technologies.

Graham Kimbell, Changyoung Kim, Weida Wu, Mario Cuoco & Jason W. A. Robinson, "Challenges in identifying chiral spin textures via the topological Hall effect", Communications Materials 3, 19 (2022)

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