  Here, we report the magneto-conductivity (up to 14Tesla and down to 5K)
analysis of Bi2Te3 single-crystal. A sharp magneto-conductivity (MC) rise
(inverted v-type cusp) is observed near H=0 due to the weak antilocalization
(WAL) effect, while a linear curve is observed at higher fields. We account for
magneto-conductivity (MC) over the entire range of applied magnetic fields of
up to 14Tesla and temperatures from 100K to 5K in a modified HLN modelling
(addition of quadratic (BH2) through quantum and classical components
involvement. The additional term BH2 reveals a gradual change of a (HLN
parameter) from -0.421(6) to -0.216(1) as the temperature increases from 5 to
100K. The phase coherence length Lphi obtained from both conventional and
modified modelling decreased with increasing temperature but remains more
protracted than the mean free path (L) of electrons. It shows the quantum phase
coherence effect dominates at high temperature.

Materials Science;Strongly Correlated Electrons