Fig. 3: Photoemission spectrum near the Fermi energy.
From: Low-dimensional electronic state at the surface of a transparent conductive oxide
a Spectra acquired with different photon energies corresponding to different perpendicular momentum kz values, as indicated by black stars in Fig. 2b. For all the acquired bands, the bandwidth and Fermi momentum is similar, as shown by the momentum distribution curves (MDCs) at Fermi energy EF (red) and the matched band (black). The vertical dashed lines indicate Fermi momentum kF. b Intensity map at the Fermi energy assembled from several cuts at different ky values. c Spectrum image obtained along a cut parallel to the Γ-X direction, as indicated by the dashed white line in (b). The spectra in (b) and (c) were measured with an incoming photon energy of 28 eV, providing a higher resolution than in previously shown spectra. d Momentum distribution curve (MDC) extracted from panel (c) at Fermi energy EF, and fitted to two Lorentzian profiles to determine the position of Fermi momentum kF. e Second derivative along the energy axis for the spectrum image in (c), providing an enhanced view of the dispersing band.
