Abstract
Abstract
Here, the effect of residual strain (RS) generated by uniaxial stress on the magnetic properties and Hall effect of polycrystalline Mn3Sn is investigated. Contrary to the role of pressure in Mn3Sn, both Hall measurements and our theoretically calculated kagome lattice distortions suggest that RS is beneficial for suppressing the magnetic transition from an inverse triangular antiferromagnetic (AFM) state to a helical AFM state. Furthermore, the topological Hall effect (THE) is observed in Mn3Sn over the entire temperature range from 5 K to 400 K due to RS. Combined with the magnetic measurements, we speculate that the THE originates from a RS-induced non-coplanar AFM structure. Our findings point out a method to realize a chiral non-coplanar AFM structure through strain engineering, thereby providing a path for the construction of topological antiferromagnets.
Funder
Science and Technology Research Project of Hebei Higher Education
Key Project of Natural Science of Hebei Higher Education
Natural Science Foundation of Hebei Province
National Natural Science Foundation of China
Science Foundation of Hebei Normal University
Subject
Surfaces, Coatings and Films,Acoustics and Ultrasonics,Condensed Matter Physics,Electronic, Optical and Magnetic Materials
Cited by
8 articles.
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