Probing domain wall dynamics in magnetic Weyl semimetals via the non-linear anomalous Hall effect
arXiv:2210.01150 · doi:10.1103/PhysRevB.107.214450
Abstract
The magnetic textures of Weyl semimetals are embedded into their topological structure and interact dynamically with it. Here, we examine electric field-induced structural phase transitions in domain walls mediated by the spin transfer torque, and their footprint in charge transport. Remarkably, domain wall dynamics lead to a transient, local, non-linear anomalous Hall effect and non-linear anomalous drift current, which serve as direct probes of the magnetization dynamics and of the domain wall location. We discuss experimental observation in state-of-the-art samples.
29 pages, 7 figures
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