Field induced topological Hall effect in non-coplanar triangular antiferromagnetic geometry of Mn3Sn

Abstract

Non-collinear triangular antiferromagnets with a coplanar spin arrangement and vanishing net magnetic moment can exhibit a large anomalous Hall effect owing to their non-vanishing momentum space Berry curvature. Here we show the existence of a large field induced topological Hall effect in the non-coplanar triangular antiferromagnetic geometry of Mn3Sn. A detailed magnetic and Hall effect measurements demonstrate the presence of three distinct Hall contributions; a high temperature anomalous Hall effect, a low temperature topological Hall effect and an intermediate temperature region with coexistence of both the effects. The origin of the observed topological Hall effect is attributed to the scalar spin chirality induced real space Berry curvature that appears when the system undergoes from a trivial non-coplanar triangular spin alignment to a topologically protected non-trivial spin texture like skyrmions by application of magnetic field at low temperatures.

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• Intrinsic Magnetic Topological Materials
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• Robust topological Hall effect driven by tunable noncoplanar magnetic state in Mn-Pt-In inverse tetragonal Heusler alloys
• Hump-like structure in Hall signal from SrRuO${}_3$ ultra-thin films without inhomogeneous anomalous Hall effect
• Electronic properties and phase transition in Kagome metal, Yb0.5Co3Ge3
• Magneto-Transport Properties of Kagome Magnet TmMn${}_6$Sn${}_6$
• Topological Hall effect arising from the mesoscopic and microscopic non-coplanar magnetic structure in MnBi
• Pressure controlled trimerization for switching of anomalous Hall effect in triangular antiferromagnet Mn${}_3$Sn
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• Tuning of topological properties in the strongly correlated antiferromagnet Mn${}_3$Sn via Fe doping
• Magnetic-field-induced FM-AFM metamagnetic transition and strong negative magnetoresistance in Mn${}_{1/4}$NbS${}_2$ under pressure
• Role of magnetic exchange interactions in chiral-type Hall effects of epitaxial Mn${}_x$PtSn films
• Fluctuation-driven topological Hall effect in room-temperature itinerant helimagnet Fe3Ga4
• Anisotropic transport properties and topological Hall effect in the annealed kagome antiferromagnet FeGe
• Large magnetoresistance and first-order phase transition in antiferromagnetic single-crystalline EuAg${}_4$Sb${}_2$
• Electronic band structures of topological kagome materials
• Higher order exchange driven noncoplanar magnetic state and large anomalous Hall effects in electron doped kagome magnet Mn${}_3$Sn
• Noncollinear Magnetic Modulation of Weyl Nodes in Ferrimagnetic Mn${}_3$Ga
• Optical study of three-dimensional Weyl semimetal Mn${}_3$Sn
• Higher-order Hall response arises from octupole order and scalar spin chirality in a noncollinear antiferromagnet
• Pressure induced isostructural phase transition in biskyrmion host hexagonal MnNiGa
• Tuning of Electrical, Magnetic, and Topological Properties of Magnetic Weyl Semimetal Mn${}_{3+x}$Ge by Fe doping
• Intra-unitcell cluster-cluster magnetic compensation and large exchange bias in cubic alloys
• Planar topological Hall effect in a hexagonal ferromagnetic Fe5Sn3 single crystal
• Hydrostatic and chemical pressure driven crossover from commensurate to the incommensurate state of the Weyl semimetal Mn${}_{3+x}$Sn${}_{1-x}$
• Sn${}_{0.06}$Cr${}_3$Te${}_4$: A Skyrmion Superconductor
• Spin-reorientation driven topological Hall effect in Fe4GeTe2
• Weak low-temperature ferromagnetism and linear magnetoresistance in Lu${}_{0.75}$Fe${}_6$Sn${}_6$ with a disordered HfFe${}_6$Ge${}_6$-type structure
• Large unconventional anomalous Hall effect far above room temperature in epitaxial Fe${}_3$Ga${}_4$ films