{ "id": "1901.01749", "version": "v1", "published": "2019-01-07T11:14:51.000Z", "updated": "2019-01-07T11:14:51.000Z", "title": "Non-topological Origin of the Planar Hall Effect in Type-II Dirac Semimetal NiTe2", "authors": [ "Qianqian Liu", "Bo Chen", "Boyuan Wei", "Shuai Zhang", "Minhao Zhang", "Faji Xie", "Muhammad Naveed", "Fucong Fei", "Baigen Wang", "Fengqi Song" ], "categories": [ "cond-mat.mes-hall", "cond-mat.mtrl-sci" ], "abstract": "Dirac and Weyl semimetals are new discovered topological nontrivial materials with the linear band dispersions around the Dirac/Weyl points. When applying non-orthogonal electric current and magnetic field, an exotic phenomenon called chiral anomaly arises and negative longitudinal resistance can be detected. Recently, a new phenomenon named planer Hall effect (PHE) is considered to be another indication of chiral anomaly which has been observed in many topological semimetals. However, it still remains a question that is the PHE only attributed to chiral anomaly? Here we demonstrate the PHE in a new-discovered type-II Dirac semimetal NiTe2 by low temperature transport. However, after detailed analysis, we conclude that the PHE results from the trivial orbital magnetoresistance. This work reveals that PHE is not a sufficient condition of chiral anomaly and one need to take special care of other non-topological contribution in such studies.", "revisions": [ { "version": "v1", "updated": "2019-01-07T11:14:51.000Z" } ], "analyses": { "keywords": [ "planar hall effect", "non-topological origin", "named planer hall effect", "chiral anomaly", "new-discovered type-ii dirac semimetal nite2" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }