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We report the anisotropic magneto-transport measurement on a non-compoundband semiconductor black phosphorus (BP) with magnetic field B up to 16 Teslaapplied in both perpendicular and parallel to electric current I underhydrostatic pressures. The BP undergoes a topological Lifshitz transition fromband semiconductor to a zero-gap Dirac semimetal state, characterized by a weaklocalization-weak antilocaliation transition at low magnetic fields and theemergence of a nontrivial Berry Phase of detected by SdH magneto-oscillationsin magnetoresistance curves. In the transition region, we observe apressure-dependent negative MR only in the B//I configuration. This negativelongitudinal MR is attributed to the Adler-Bell-Jackiw anomaly (topologicalE$\cdot$B term) in the presence of weak antilocalization corrections.

Topological Phase Transition and Chiral-Anomaly Driven Negative Magneto-Resistance in Bulk Black Phosphorus