The BHZ model with weakly broken time-reversal symmetry shows gapless boundary modes interpreted as compactified 3D Weyl nodes of the quantum skyrmion Hall effect, and this is claimed to explain a 2015 HgTe edge-conduction anomaly.
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Signatures of the quantum skyrmion Hall effect in the Bernevig-Hughes-Zhang model
The BHZ model with weakly broken time-reversal symmetry shows gapless boundary modes interpreted as compactified 3D Weyl nodes of the quantum skyrmion Hall effect, and this is claimed to explain a 2015 HgTe edge-conduction anomaly.