  We investigate ferroelectric polariation as well as the formation of
long-range order and the carrier density distribution in type-II Weyl semimetal
WTe$_{2}$ in $T_{d}$ phase.
  It is been found that the metallicity and ferroelectricity can coexist in
bulk WTe$_{2}$ which has a significant impact on the electrical
transport\cite{Sharma}, despite its large conductance. Also, our theoretical
calculation and numerical simulation provide a deeper insight to the electrical
structure-dependent dynamics of WTe$_{2}$. Base on the two-level approximation
verify that the polarization stems from uncompensated out-of-plane interband
transition of the electrons, which is base on the calculations of the dipole
transition moment (in both the momentum space and frequency domain), and we
found that the topological character of type-II Weyl system is closely related
to the electronic behaviors (like the carrier compensation) and the excitations
near the Weyl cone. The anisotropy and the topologically protected
spin-polarized bulk (Weyl orbit) and surface states in WTe$_{2}$ induce
hysteresis, which exhibitspotential in applications of non-volatile
energy-efficient data-storage devices. Part of the properties of WTe$_{2}$ are
also shares shared by the thermoelectric properties with other two-dimensional
transition-metal dichalcogenides, like the WSe$_{2}$ and MoTe$_{2}$.
