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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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

Bibliographical note

KAUST Repository Item: Exported on 2020-04-23
Acknowledged KAUST grant number(s): CRF-2015-SENSORS-2708, URF-2015-2549
Acknowledgements: The research reported in this publication was supported by King Abdullah University of Science & Technology (KAUST) with Grants No. CRF-2015-SENSORS-2708 and No. URF-2015-2549 and by the Natural Sciences and Engineering Research Council of Canada (NSERC) Discovery Grant No. RGPIN-04178, the Ontario Early Researcher Award, and the Canada First Research Excellence Fund.

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