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arXiv · 2011.09481

Generating a topological anomalous Hall effect in a non-magnetic conductor

James H. Cullen·Pankaj Bhalla·Elizabeth Marcellina·Alexander R. Hamilton·Dimitrie Culcer
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Abstract

The ordinary Hall effect is driven by the Lorentz force, while its anomalous counterpart occurs in ferromagnets. Here we show that the Berry curvature monopole of non-magnetic 2D spin-3/2 holes leads to a novel Hall effect linear in an applied in-plane magnetic field B_x. There is no Lorentz force hence no ordinary Hall effect, while all disorder contributions vanish to leading order in B_x. This intrinsic phenomenon, which we term the anomalous planar Hall effect (APHE), provides a non-quantized footprint of topological transport directly accessible in p-type semiconductors.

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James H. Cullen, Pankaj Bhalla, Elizabeth Marcellina, Alexander R. Hamilton, Dimitrie Culcer. 2020-11-18. Generating a topological anomalous Hall effect in a non-magnetic conductor. https://doi.org/10.1103/physrevlett.126.256601

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