  Transition metal trichalcogenides (TMTs), a family of van der Waals
materials, have gained increasing interests from the discovery of magnetism in
few-layer forms. Although TMTs with 3d transition metal elements have been
studied extensively, much less is explored for the 4d and 5d cases, where the
interesting interplay between electron correlations and the relativistic
spin-orbit coupling is expected. Using ab initio calculations, we here
investigate the electronic property of TMTs with 4d and 5d transition metal
elements. We show that the band structures exhibit multiple node-like features
near the Fermi level. These are the remnant of multiple Dirac cones that were
recently discovered in the monolayer cases. Our results indicate that the
peculiar two-dimensional multiple Dirac cones are concealed even in the layered
bulk systems.
