  Platinum (Pt) has been very much used for spin-charge conversion in
spintronics research due to it's large intrinsic spin-orbit interaction.
Magnetoconductance originated from weak-antilocalization effect in quantum
interference regime is used as a powerful tool to obtain the microscopic
information of spin-orbit interaction and coherence phase breaking scattering
process among itinerant electrons. To acquire the knowledge of different types
of scattering processes, we have performed magnetoconductance study on Pt thin
films which manifests multi-band (multi-channel) conduction. An extensive
analysis of quantum interference originated weak-antilocalization effect
reveals the existence of strong (weak) inter-band scattering between two
similar (different) orbitals. Coherence phase breaking lengths ($l_{\phi}$) and
their temperature dependence are found to be significantly different for these
two conducting bands. The observed effects are consistent with theoretical
predication that there exist three Fermi-sheets with one $s$ and two $d$
orbital character. This study provides the evidence of two independent
non-similar conducting channels and presence of anisotropic spin-orbit
interaction along with $e$-$e$ correlation in Pt thin films.
