期刊
APL MATERIALS
卷 9, 期 5, 页码 -出版社
AIP Publishing
DOI: 10.1063/5.0048733
关键词
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资金
- Department of Energy (DOE), Office of Science, Basic Energy Sciences [DE-SC0001304]
- Center for Emergent Materials
- NSF-funded MRSEC [DMR-2011876]
The study reports the observation of high-temperature topological Hall signal in Mn3Sn/Pt bilayers, likely attributed to the stabilization of topological spin textures enabled by the strong spin-orbit coupling of the Pt overlayer and the Dzyaloshinskii-Moriya interaction at the Mn3Sn/Pt interface.
Noncollinear antiferromagnet Mn3Sn has attracted wide interest as it is a candidate for Weyl semimetal. Here, we report the observation of topological Hall like signals in Mn3Sn/Pt bilayers grown on Al2O3(0001). X-ray diffraction and scanning transmission electron microscopy results confirm the high epitaxial quality of the c-axis-oriented Mn3Sn films. The detected topological Hall resistivity shows a broad temperature range from 210 to 365 K by tuning the thickness of Mn3Sn from 3 to 15 nm. Compared with previously reported topological Hall effects in Mn3Sn at temperatures below 50 K, the observed high-temperature topological Hall signal is likely due to the stabilization of topological spin textures enabled by the strong spin-orbit coupling of the Pt overlayer and the Dzyaloshinskii-Moriya interaction at the Mn3Sn/Pt interface.
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