  ZrTe5 is a layered material that exhibits intricate topological effects.
Intensive theoretically and experimental efforts have been devoted to try to
understand the physics in this materials. In this paper the temperature
dependent magneto-transport properties of ZrTe5 thin flakes are investigated. A
characteristic temperature T* is observed in the temperature dependence of
three different types of magnetoresistance simultaneously, which are the
saturated Hall anomaly, the chiral anomaly and the longitudinal
magnetoresistance. Furthermore, the value of T* decreases monotonically from
200K to 160K with increasing thickness of the ZrTe5 thin flakes from 42nm to
89nm. Temperature induced topological phase transitions are attributed to the
cause of such anomaly in the three types of magnetoresistance at T*. Our
findings provide a multi-parameter indicator for the emergence of topological
phase transition in ZrTe5 and could be extended to the study of other
topological materials. The temperature dependence of the three types of
magnetoresistance also shed light on the role of anomalous Hall Effect in the
transport properties of ZrTe5.

Materials Science;Mesoscale and Nanoscale Physics