  Recent experimental realization of long sought Weyl fermions in non-magnetic
crystals has greatly motivated condensed matter physicists to search for
materials supporting Weyl fermions. Weyl fermions appear to be very promising
for future electronics, often referred as Weyltronics. Here, by means of
first-principle calculations, we report a stoichiometric crystal structure of
BiSb with broken space-inversion symmetry. This structure is insulating in bulk
and has non-trivial band topology. We observe a pressure driven Weyl
semi-metallic phase transition in this crystal structure. The obtained Weyl
semi-metallic phase exists in the 4.0 - 6.0 GPa pressure range. We find that a
total 6 pairs of Weyl points, 6 monopoles and 6 antimonopoles, exist in the
Brillouin zone. The Weyl points with opposite chirality are located at
different energy values yielding separate electron and hole Fermi-surfaces.
Additionally, the spin-texture of the bulk BiSb compound appears to be
electrically controllable when the interlink between pressure and an electric
field is exploited. This produces novel manipulable topological transport
properties in this system which are very promising for implementation of this
kind of materials in next-generation Weyltronics and spintronic devices.
