Fig. 1: Illustrations of the 1T/1H-TaS2 bilayer structure.
From: Heavy fermions vs doped Mott physics in heterogeneous Ta-dichalcogenide bilayers

a Local atomic structures for the 1T and 1H phases. Large spheres in blue and gray represent Ta atoms in 1T and 1H, respectively. Small yellow spheres denote S atoms. b 1T-TaS2 develops a Star-of-David charge density wave pattern (blue) forming a triangular lattice. One electron is localized at the center to the Star-of-David in a free standing 1T layer. The 1H layer (gray) is metallic but hosts electrons transferred from the 1T layer via interlayer interaction. Only Ta atoms are shown here while S atoms are omitted for clarity.