Anisotropic planar Hall effect in the type-II topological Weyl semimetal WTe2

Peng Li, Chenhui Zhang, Yan Wen, Long Cheng, George Nichols, David G. Cory, Guo-Xing Miao, Xixiang Zhang

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11 Scopus citations

Abstract

Giant planar Hall effect arising from chiral anomaly, which is related to the Berry curvature, has been predicted and realized in nonmagnetic Dirac/Weyl semimetals. Here, we report the observation of the anisotropic planar Hall effect in type-II Weyl semimetal WTe2. Interestingly, we observed chiral-anomaly-induced sinusoidal angular dependent PHE when the electric field is parallel to the tilting direction of Weyl cone, i.e. b-axis of WTe2. The PHE amplitude is linearly dependent on the magnetic fields and decreases gradually as the temperature increases across the topological phase transition temperature. Our observations clearly revealed the footprints on transport from the chiral anomaly feature in type-II Weyl semimetals.
Original languageEnglish (US)
JournalPhysical Review B
Volume100
Issue number20
DOIs
StatePublished - Nov 20 2019

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