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The Chiral Anomaly and Ultrahigh Mobility in Crystalline HfTe5

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arxiv 1512.08690 v1 pith:GON3DVBS submitted 2015-12-29 cond-mat.mtrl-sci

Huichao Wang , Chao-Kai Li , Haiwen Liu , Jiaqiang Yan , Junfeng Wang , Jun Liu , Ziquan Lin , Yanan Li
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Yong Wang Liang Li David Mandrus X. C. Xie Ji Feng Jian Wang
This is my paper · ORCID
classification cond-mat.mtrl-sci
keywords hfte5anomalychiralmobilityultrahighelectricalanalyzingapplications
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HfTe5 is predicted to be a promising platform for studying topological phases. Here through an electrical transport study, we present the first observation of chiral anomaly and ultrahigh mobility in HfTe5 crystals. Negative magneto-resistivity in HfTe5 is observed when the external magnetic and electrical fields are parallel (B//E) and quickly disappears once B deviates from the direction of E. Quantitative fitting further confirms the chiral anomaly as the underlying physics. Moreover, by analyzing the conductivity tensors of longitudinal and Hall traces, ultrahigh mobility and ultralow carrier density are revealed in HfTe5, which paves the way for potential electronic applications.

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