Fig. 4From: Lattice Dynamics of the Rhenium and Technetium DichalcogenidesThe calculated zone-centre phonon modes of ReS2 (black squares), ReSe2 (red circles) and TcS2 (green triangles) plotted in order of increasing frequency and scaled as discussed. Top: scaled by the square root of the chlacogen mass; bottom: scaled by the square root of the transition metal massBack to article page