Fig. 2: AF features in the band structure.
From: Evidence of spin and charge density waves in Chromium electronic bands
(a), (d) and (g), (l) show the band structures along the different directions in reciprocal space, probed using 638 eV photons with p(s)-polarization, respectively. LDA band structures are shown for a non-magnetic BCC unit cell (b, e, h, m) and an AF SC cell (c, f, i, n), decomposed according to the corresponding symmetry. o shows a zoom of the ARPES data from (a), combined with the band structure of (c), to highlight the gaps present along the Γ-H direction. For the AF case, an LDA+U computation was performed, with U = 0.08 eV, chosen so that the atomic magnetic moment was M ≃ 0.6 μB. The bands are unfolded onto the BCC cell to emulate the experimental ARPES intensities, and a rigid shift of +0.2 eV was adopted. The experimental data in (a, d, g, l) are reported using a square-root color scale, in (o), a linear color scale has been adopted instead.
