  The current article investigated the band structure in the presence and
absence of spin-orbit coupling (SOC), examined the Z2 invariants, and
investigated the detailed angle-dependent magneto-transport of up to 10 T
(Tesla) and down to 2 K for the Bismuth crystal. The out-of-plane
field-dependent magnetoresistance (MR) is positive and is huge to the order of
~104% at 2 K and 10 T. On the other hand, the longitudinal (in-plane)
field-dependent MR is relatively small and is negative. The thermal activation
energy is also estimated by using the Boltzmann formula from resistivity vs
temperature measurement under applied transverse magnetic fields. The
topological nature of Bi is confirmed by Z2 invariant calculation using Density
functional theory. PBESol bands show trivial but Hybrid functional (HSE) bands
show non-trivial topology being present in Bismuth. This article
comprehensively studies the dependence of MR oscillations upon the angle
between the applied field and the current. The observed oscillations fade away
as the angle is increased. This article is an extension of our previous work on
Bismuth [1], in which we conducted a comprehensive analysis of its structural
and micro-structural properties along with its transport behavior in an applied
transverse magnetic field.
