Fig. 2: Electronic structure of PtGa along the high-symmetry lines showing an singular WP at the center of the BZ surrounded by WNWs on the BZ boundaries.
From: Observation of a singular Weyl point surrounded by charged nodal walls in PtGa
a FS map in the Γ–X–M plane, acquired with hv = 605 eV at 12 K. b, c High-resolution ARPES spectra along the Γ–X line and the related curvature intensity plot. The red arrows indicate the WP (Weyl point) at the Γ point. d Calculated band dispersion along the X–Γ–X line. The singular WP at the Γ point is highlighted by the circle. e, f The high-resolution ARPES spectra along the Γ–M direction and the related curvature intensity plot. The red arrows indicate the singular WP in the center of the BZ. g The calculated band dispersion along the M–Γ–M direction. The singular WP at the Γ point is highlighted by the ellipse. h 3D intensity plot of the electronic structure in the Γ–X–M plane; the singular WP at the Γ point and the WNWs (Weyl nodal walls) on the BZ boundary are marked with the filled green circle and black dotted lines, respectively. i–p The ARPES spectra and the related calculated band dispersions along high-symmetry lines on the BZ boundaries are displayed alternately. The black dispersive curves represent the WNWs. “SS” denotes surface state.
