Extended Data Figure 6: k -resolved spectral functions A( k , ω) of Os at ultra-high compressions along the high-symmetry lines in the hcp Brillouin zone.
From: The most incompressible metal osmium at static pressures above 750 gigapascals
a, b, Calculations are carried out at pressures of 247 GPa (a) and 477 GPa (b) using LDA+DMFT. The experimental lattice parameters were used in the calculations (a = 2.449 Å, c/a = 1.596 at 247 GPa; a = 2.335 Å, c/a = 1.597 at 477 GPa). Energies are given relative to the Fermi energy, which is taken to be zero. Hole pockets are present at the Γ and L points at P = 247 GPa. Increasing the pressure to 477 GPa does not induce any new ETTs. Moreover, no features of the band structure suggest that new ETTs might be induced by further increase of the pressure within reasonable limits.
