Large topological Hall effect in an easy-cone ferromagnet (Cr0.9B0.1)Te

Abstract

The Berry phase understanding of electronic properties has attracted special interest in condensed matter physics, leading to phenomena such as the anomalous Hall effect and the topological Hall effect. A non-vanishing Berry phase, induced in momentum space by the band structure or in real space by a non-coplanar spin structure, is the origin of both effects. Here, we report a sign conversion of the anomalous Hall effect and a large topological Hall effect in (Cr0.9B0.1)Te single crystals. The spin reorientation from an easy-axis structure at high temperature to an easy-cone structure below 140 K leads to conversion of the Berry curvature, which influences both, anomalous and topological, Hall effects in the presence of an applied magnetic field and current. We compare and summarize the topological Hall effect in four categories with different mechanisms and have a discussion into the possible artificial fake effect of topological Hall effect in polycrystalline samples, which provides a deep understanding of the relation between spin structure and Hall properties.

arXiv comment4 figures, 1 table

References in corpus (20)

• Anomalous Hall effect
• Advances in the Physics of Magnetic Skyrmions and Perspective for Technology
• Topological Hall effect in the A-phase of MnSi
• Giant anomalous Hall effect in a ferromagnetic Kagome-lattice semimetal
• Anomalous Hall Effect and Magnetic Monopoles in Momentum-Space
• Skyrmion lattice with a giant topological Hall effect in a frustrated triangular-lattice magnet
• Discovery of Magnetic Antiskyrmions Beyond Room Temperature in Tetragonal Heusler Materials
• Giant anomalous Nernst effect and quantum-critical scaling in a ferromagnetic semimetal
• Heusler, Weyl, and Berry
• Robust formation of skyrmions and topological Hall effect in epitaxial thin films of MnSi
• Experimental signatures of the mixed axial-gravitational anomaly in the Weyl semimetal NbP
• A centrosymmetric hexagonal magnet with superstable biskyrmion magnetic nanodomains in a wide temperature range of 100K to 340K
• Discretized Topological Hall Effect Emerging from Skyrmions in Constricted Geometry
• Large topological Hall effect in a geometrically frustrated kagome magnet Fe${}_3$Sn${}_2$
• Scattering mechanisms in textured FeGe thin films: magnetoresistance and the anomalous Hall effect
• Interpretation of experimental evidence of the topological Hall effect
• Integration of the Noncollinear Antiferromagnetic Metal Mn3Sn onto Ferroelectric Oxides for Electric-Field Control
• Detection of antiskyrmions by topological Hall effect in Heusler compounds
• Anisotropic Topological Hall Effect with Real and Momentum Space Berry Curvature in the Antiskrymion Hosting Heusler Compound Mn${}_{1.4}$PtSn
• Topological Hall effect in thin films of Mn${}_{1.5}$PtSn

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• Intricate magnetic interactions and topological Hall effect observed in itinerant room-temperature layered ferromagnet Cr0.83Te
• Large antiferromagnetic fluctuation enhancement of the thermopower at a critical doping in magnetic semimetal Cr1+dTe2
• In-Plane Magnetic Anisotropy and Large topological Hall Effect in Self-Intercalated Ferromagnet Cr1.61Te2