Anisotropic planar Hall effect in the type-II topological Weyl semimetal WTe2
Cory, David G.
KAUST DepartmentMaterial Science and Engineering Program
Physical Science and Engineering (PSE) Division
Permanent link to this recordhttp://hdl.handle.net/10754/660422
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AbstractThe giant planar Hall effect arising from a chiral anomaly, and that is related to the Berry curvature, has been predicted but never observed in nonmagnetic type-II Dirac/Weyl semimetals. Here, we report an observation of the anisotropic planar Hall effect in type-II Weyl semimetal WTe 2 . Interestingly, we observe a chiral-anomaly-induced sinusoidal angular-dependent planar Hall effect when the electric field is parallel to the tilting direction of Weyl cone, i.e., the b axis of WTe2.The planar Hall effect amplitude is linearly dependent on the magnetic fields and decreases gradually as the temperature increases across the topological phase transition temperature. Our observations clearly reveal the footprints on transport from the chiral anomaly feature in type-II Weyl semimetals.
CitationLi, P., Zhang, C., Wen, Y., Cheng, L., Nichols, G., Cory, D. G., … Zhang, X.-X. (2019). Anisotropic planar Hall effect in the type-II topological Weyl semimetal WTe2. Physical Review B, 100(20). doi:10.1103/physrevb.100.205128
SponsorsThe 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.
PublisherAmerican Physical Society (APS)
JournalPhysical Review B