Anomalous Electrical Transport in the Kagome Magnet YbFe${}_6$Ge${}_6$

Abstract

Two-dimensional (2D) kagome metals offer a unique platform for exploring electron correlation phenomena derived from quantum many-body effects. Here, we report a combined study of electrical magnetotransport and neutron scattering on YbFe${}_6$Ge${}_6$, where the Fe moments in the 2D kagome layers exhibit an $A$-type collinear antiferromagnetic order below $T_{\mathrm{N}}\approx 500$ K. Interactions between the Fe ions in the layers and the localized Yb magnetic ions in between reorient the $c$-axis aligned Fe moments to the kagome plane below $T_{\mathrm{SR}}\approx 63$ K. Our magnetotransport measurements show an intriguing anomalous Hall effect (AHE) that emerges in the spin-reorientated collinear state, accompanied by the closing of the spin anisotropy gap as revealed from inelastic neutron scattering. The gapless spin excitations and the Yb-Fe interaction are able to support a dynamic scalar spin chirality, which explains the observed AHE. Therefore, our study demonstrates spin fluctuations may provide an additional scattering channel for the conduction electrons and give rise to AHE even in a collinear antiferromagnet.

arXiv comment7 pages, 5 figures, to be published at PRL

References in corpus (32)

• Anomalous Hall effect
• Mantid - Data Analysis and Visualization Package for Neutron Scattering and $\mu SR$ Experiments
• Topological Hall effect in the A-phase of MnSi
• Anomalous Hall effect arising from noncollinear antiferromagnetism
• Skyrmion lattice with a giant topological Hall effect in a frustrated triangular-lattice magnet
• Dirac fermions and flat bands in the ideal kagome metal FeSn
• Skyrmion phase and competing magnetic orders on a breathing kagome lattice
• Discovery of charge density wave in a correlated kagome lattice antiferromagnet
• HORACE: software for the analysis of data from single crystal spectroscopy experiments at time-of-flight neutron instruments
• Novel magnetic states and nematic spin chirality in the kagome lattice metal YMn${}_6$Sn${}_6$
• In-plane magnetic field induced double fan spin structure with $\text{c}$-axis component in metallic kagome antiferromagnet YMn${}_6$Sn${}_6$
• Near-room-temperature giant topological Hall effect in antiferromagnetic kagome metal YMn6Sn6
• Spin chirality fluctuation in two-dimensional ferromagnets with perpendicular anisotropy
• Quasi 2-D magnetism in the Kagome layer compound FeSn
• Scattering universality classes of side jump in anomalous Hall effect
• Magnetic Susceptibility of Collinear and Noncollinear Heisenberg Antiferromagnets
• Orbital Magneto-Nonlinear Anomalous Hall Effect in Kagome Magnet Fe${}_3$Sn${}_2$
• Spin excitations in metallic kagome lattice FeSn and CoSn
• Theory of giant skew scattering by spin cluster
• Magnetotransport as diagnostic of spin reorientation: kagome ferromagnet as a case study
• Magnetoresistance and valley degree of freedom in bulk bismuth
• Electronic Transport on the Shastry-Sutherland Lattice in Ising-type Rare Earth Tetraborides
• Magnetic Structure and Magnetization of Helical Antiferromagnets in High Magnetic Fields Perpendicular to the Helix Axis at Zero Temperature
• Damped Dirac magnon in a metallic kagome antiferromagnet FeSn
• Large intrinsic anomalous Hall effect in both Nb${}_2$FeB${}_2$ and Ta${}_2$FeB${}_2$ with collinear antiferromagnetism
• Thermally Driven Topology in Chiral Magnets
• Competing itinerant and local spin interactions in kagome metal FeGe
• Direct observation of Fe spin reorientation in single crystalline YbFe6Ge6
• Kagome lattice promotes chiral spin fluctuations
• Topological Hall effect induced by chiral fluctuations in ErMn6Sn6
• Electronic structure and physical properties of candidate topological material GdAgGe
• A new inelastic neutron spectrometer HODACA

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