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ZrTe5 is a layered material that exhibits intricate topological effects.Intensive theoretically and experimental efforts have been devoted to try tounderstand the physics in this materials. In this paper the temperaturedependent magneto-transport properties of ZrTe5 thin flakes are investigated. Acharacteristic temperature T* is observed in the temperature dependence ofthree different types of magnetoresistance simultaneously, which are thesaturated Hall anomaly, the chiral anomaly and the longitudinalmagnetoresistance. Furthermore, the value of T* decreases monotonically from200K to 160K with increasing thickness of the ZrTe5 thin flakes from 42nm to89nm. Temperature induced topological phase transitions are attributed to thecause of such anomaly in the three types of magnetoresistance at T*. Ourfindings provide a multi-parameter indicator for the emergence of topologicalphase transition in ZrTe5 and could be extended to the study of othertopological materials. The temperature dependence of the three types ofmagnetoresistance also shed light on the role of anomalous Hall Effect in thetransport properties of ZrTe5.

Crossover behavior in the magnetoresistance of thin flakes of the topological material ZrTe5