Figure 2
From: Magnetoresistance in the Spin-Orbit Kondo State of Elemental Bismuth

Spectral functions and two-photon photoemission.
LDA (dashed) and LDA + DMFT [for U = 8.0 eV (dot-dashed), U = 10.0 eV (solid) and fixed JH = 0.5 eV] orbital-resolved and total density-of-states (DOS) of bismuth. Notice the band gap near the Fermi energy (EF = ω = 0) in LDA and bulk metallicity in the LDA + DMFT results. Right-lower panel: Comparison between the LDA + DMFT total DOS and two-photon photoemission (2PPE) data taken at T = 110 K for Bi(111)30. The 2PPE curve is shifted downward to coincide with theory at low energies. As seen, the low-energy peaks are accurately resolved within LDA + DMFT.