  Recently, anomalies in the temperature dependences of the carrier density
and/or mobility derived from analysis of the magnetoresistivities using the
conventional two-band model have been used to unveil intriguing
temperature-induced Lifshitz transitions in various materials. For instance,
two temperature-driven Lifshitz transitions were inferred to exist in the Dirac
nodal-line semimetal ZrSiSe, based on two-band model analysis of the Hall
magnetoconductivities where the second band exhibits a change in the carrier
type from holes to electrons when the temperature decreases below T = 106 K and
a dip is observed in the mobility versus temperature curve at T = 80 K. Here,
we revisit the experiments and two-band model analysis on ZrSiSe. We show that
the anomalies in the second band may be spurious, because the first band
dominates the Hall magnetoconductivities at T > 80 K, making the carrier type
and mobility obtained for the second band from the two-band model analysis
unreliable. That is, care must be taken in interpreting these anomalies as
evidences for temperature-driven Lifshitz transitions. Our skepticism on the
existence of such phase transitions in ZrSiSe is further supported by the
validation of the Kohler's rule for magnetoresistances at temperatures below
180 K. This work showcases potential issues in interpreting anomalies in the
temperature dependence of the carrier density and mobility derived from the
analysis of magnetoconductivities or magnetoresistivities using the
conventional two-band model.
