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- W4296481907 abstract "In transport, the topological Hall effect (THE) presents itself as nonmonotonic features (or humps and dips) in the Hall signal and is widely interpreted as a sign of chiral spin textures, like magnetic skyrmions. However, when the anomalous Hall effect (AHE) is also present, the coexistence of two AHEs could give rise to similar artifacts, making it difficult to distinguish between genuine THE with AHE and two-component AHE. Here, we confirm genuine THE with AHE by means of transport and magneto-optical Kerr effect (MOKE) microscopy, in which magnetic skyrmions are directly observed, and find that genuine THE occurs in the transition region of the AHE. In sharp contrast, the artifact “THE” or two-component AHE occurs well beyond the saturation of the “AHE component” (under the false assumption of THE + AHE). Furthermore, we distinguish artifact “THE” from genuine THE by three methods: (1) minor loops, (2) temperature dependence, and (3) gate dependence. Minor loops of genuine THE with AHE are always within the full loop, while minor loops of the artifact “THE” may reveal a single loop that cannot fit into the “AHE component”. In addition, the temperature or gate dependence of the artifact “THE” may also be accompanied by a polarity change of the “AHE component”, as the nonmonotonic features vanish, while the temperature dependence of genuine THE with AHE reveals no such change. Our work may help future researchers to exercise caution and use these methods for careful examination in order to ascertain the genuine THE." @default.
- W4296481907 created "2022-09-21" @default.
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- W4296481907 date "2022-09-20" @default.
- W4296481907 modified "2023-10-16" @default.
- W4296481907 title "Distinguishing the Two-Component Anomalous Hall Effect from the Topological Hall Effect" @default.
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- W4296481907 doi "https://doi.org/10.1021/acsnano.2c08155" @default.
- W4296481907 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36126321" @default.
- W4296481907 hasPublicationYear "2022" @default.
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