Interpretation of experimental evidence of the topological Hall effect

Abstract

The topological Hall effect in magnetic materials is considered the ultimate trademark of the skyrmion phase. The phenomenon is identified by distinct non-monotonic features in the Hall effect signal presumed to be the evidence of the topological origin. It is demonstrated here that similar features, unrelated to the skyrmion physics, arise in heterogeneous ferromagnets when components of the material exhibit the extraordinary Hall effect with opposite polarities. Relevance of this mechanism to the published data is discussed.

References in corpus (6)

• Spontaneous Skyrmion Ground States in Magnetic Metals
• Interface-driven topological Hall effect in SrRuO${}_3$-SrIrO${}_3$ bilayer
• Formation and rotation of skyrmion crystal in the chiral-lattice insulator Cu2OSeO3
• Electric-field control of anomalous and topological Hall effects in oxide bilayer thin films
• Dimensional Crossover Induced Topological Hall Effect in a Magnetic Topological Insulator
• Discretized Topological Hall Effect Emerging from Skyrmions in Constricted Geometry

Cited by in corpus (13)

• Distinguishing two-component anomalous Hall effect from topological Hall effect
• Observation of colossal topological Hall effect in noncoplanar ferromagnet Cr5Te6 thin films
• Gradient-induced Dzyaloshinskii-Moriya interaction
• Large topological Hall effect in an easy-cone ferromagnet (Cr0.9B0.1)Te
• Metamagnetic multiband Hall effect in Ising antiferromagnet ErGa${}_2$
• Domain wall skew scattering in ferromagnetic Weyl metals
• Resonant optical topological Hall conductivity from skyrmions
• Topological phase transitions and Berry-phase hysteresis in exchange-coupled nanomagnets
• Intra-unitcell cluster-cluster magnetic compensation and large exchange bias in cubic alloys
• Nonvolatile ferroelectric field control of the anomalous Hall effect in BiFeO3/SrRuO3 bilayer
• Bounds and anomalies of inhomogeneous anomalous Hall effects
• Measuring the Hall effect in hysteretic materials
• Intrinsic Topological Weyl Phase Transition Induced by a Magnetostructural Transformation in a Kagome Magnet