Figure 2
From: Phonon triggered rhombohedral lattice distortion in vanadium at high pressure
Pressure dependence of the LA dispersion along (ξ, 0, 0); bcc phase (solid circles), rhombohedral phase (open circles).
Errors (between 0.1 and 1.2 meV) are smaller than the symbol size. The lines through the experimental points are guides to the eye. Dispersion at 45 GPa is incomplete. Inset: pressure evolution of the mode Gruneisen parameter (γ) for ξ = 0.7.
