Figure 4: Fermi arc on the Ta-terminated (001) surface of TaP.
From: Observation of Weyl nodes and Fermi arcs in tantalum phosphide
(a) Core level spectra taken with hν=610 eV, and comparisons to the one recorded with vacuum ultraviolet light for P-2p and Ta 4f7/2 core levels. (b) Fermi surface map recorded with vacuum ultraviolet light (hν=50 eV). (c) The calculated Fermi surface of the surface states on the Ta- terminated (001) surface. (d) ARPES intensity map at EB=−0.1 eV. (e) The calculated Fermi surface on P-termination (term.). (f) ARPES spectra along high symmetry lines acquired with hν=50 eV. The calculated bands on Ta termination are overlaid for comparison. The surface bands resulting from the Ta-terminated surface are indicated with colour lines. The grey arrows indicate the surface states from P-terminated surface. (g) Photon-energy-dependent spectrum acquired with hν=40–100 eV.
