Figure 4
(a) Density-functional band structure calculated for an experimental Re structure with a = 2.758 Å and c = 4.447 Å. (b) Effect of the lattice change on the density of states, where we scale the lattice parameters by the factor α. Thin-red, black, and thick-blue curves indicate the results for α = 0.99, 1, and 1.01, respectively. The results near the Fermi level (E = 0) are enlarged in the inset. An overall shrinkage of the density of states toward the Fermi level (E = 0) was observed because of a lattice expansion of 1%. The Fermi surfaces for α = 0.99, 1.00, and 1.01 are shown in Fig. S5.
