  We report the surface electronic structure of niobium phosphide NbP single
crystal on (001) surface by vacuum ultraviolet angle-resolved photoemission
spectroscopy. Combining with our first principle calculations, we identify the
existence of the Fermi arcs originated from topological surface states.
Furthermore, the surface states exhibit circular dichroism pattern, which may
correlate with its non-trivial spin texture. Our results provide critical
evidence for the existence of the Weyl Fermions in NbP, which lays the
foundation for further investigations.
