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- W3134941706 abstract "The evolution of chiral spin structures is studied in ferrimagnet Ta/Ir/Fe/GdFeCo/Pt multilayers as a function of temperature using scanning electron microscopy with polarization analysis (SEMPA). The GdFeCo ferrimagnet exhibits pure right-hand N'eel-type domain wall (DW) spin textures over a large temperature range. This indicates the presence of a negative Dzyaloshinskii-Moriya interaction (DMI) that can originate from both the top Fe/Pt and the Co/Pt interfaces. From measurements of the DW width, as well as complementary magnetic characterization, the exchange stiffness as a function of temperature is ascertained. The exchange stiffness is surprisingly mostly constant, which is explained by theoretical predictions. Beyond single skyrmions, we find by direct imaging a pure N'eel-type skyrmionium, which due to the absence of a skyrmion Hall angle is a promising topological spin structure to enable high impact potential applications in the next generation of spintronic devices." @default.
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- W3134941706 date "2021-02-26" @default.
- W3134941706 modified "2023-10-01" @default.
- W3134941706 title "Direct imaging of chiral domain walls and N'eel-type skyrmionium in ferrimagnetic alloys" @default.
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- W3134941706 doi "https://doi.org/10.48550/arxiv.2102.13502" @default.
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