We report the anisotropic magneto-transport measurement on a non-compound band semiconductor black phosphorus (BP) with magnetic field B up to 16 Tesla applied in both perpendicular and parallel to electric current I under hydrostatic pressures. The BP undergoes a topological Lifshitz transition from band semiconductor to a zero-gap Dirac semimetal state, characterized by a weak localization-weak antilocaliation transition at low magnetic fields and the emergence of a nontrivial Berry Phase of detected by SdH magneto-oscillations in magnetoresistance curves. In the transition region, we observe a pressure-dependent negative MR only in the B//I configuration. This negative longitudinal MR is attributed to the Adler-Bell-Jackiw anomaly (topological E⋅B term) in the presence of weak antilocalization corrections.
@article{arxiv.1609.02297,
title = {Topological Phase Transition and Chiral-Anomaly Driven Negative Magneto-Resistance in Bulk Black Phosphorus},
author = {Chun-Hong Li and Yu-Jia Long and Ling-Xiao Zhao and Lei Shan and Zhi-An Ren and Jian-Zhou Zhao and Hong-Ming Weng and Xi Dai and Zhong Fang and Gen-Fu Chen and Cong Ren},
journal= {arXiv preprint arXiv:1609.02297},
year = {2017}
}