Challenges in identifying chiral spin textures via the topological Hall effect
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Peer-reviewed
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jats:titleAbstract</jats:title>jats:pChiral spin textures such as skyrmions are of interest to the field of spintronics for their potential use in future computing devices. Hall effect measurements are a simple and powerful method to probe the electronic and magnetic properties of materials. The topological Hall effect, which appears as anomalies in Hall resistance versus magnetic field measurements compared to magnetic measurements, has frequently been used to establish the occurrence of chiral spin textures. However, in addition to experimental issues, intrinsic electronic mechanisms combined with inhomogeneity in materials and at interfaces can lead to an inhomogeneous anomalous Hall effect which could be mistaken for a topological Hall signal. This review covers recent research using Hall effect measurements to probe chiral spin textures, focusing on SrRuOjats:sub3</jats:sub> as a model system. The ambiguity between Hall effects due to topological sources has led to disagreement in the interpretation of experimental results and casts doubts on the effectiveness of these techniques for investigating chiral spin textures.</jats:p>
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Funder: Institute for Basic Science in Korea - ibs.re.kr (Auto-fill suggests for "Institute for Basic Science, South Georgia and the South Sandwich Islands")
Funder: Project QUANTOX Grant Agreement No. 731473 QuantERA-NET Cofund in Quantum Technologies, implemented within the EU-H2020 Programme “Two-dimensional Oxides Platform for SPIN-orbitronics nanotechnology (TOPSPIN)” funded by MIUR-PRIN 2017, grant 20177SL7HC
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2662-4443
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Engineering and Physical Sciences Research Council (EP/P026311/1)