Abstract
is predicted to be a promising platform for studying topological phases. Here through an electrical transport study, we present an observation of chiral anomaly and ultrahigh mobility in crystals. Negative magnetoresistivity in 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 , which paves the way for potential electronic applications.
- Received 30 December 2015
- Revised 24 March 2016
DOI:https://doi.org/10.1103/PhysRevB.93.165127
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