Figure 1
From: A Strategy to Create Spin-Split Metallic Bands on Silicon Using a Dense Alloy Layer
Structural and electronic properties of the 
(left panel) and 
(right panel).
(a) and (e) 30 × 30 Å2 STM images. Upper and lower halves in (e) present experimental and simulated empty-state (+0.3 V) STM images, respectively. (b) and (f) Structural models where Bi atoms are shown by violet circles, Na atoms by green circles and Si atoms by gray circles. Positions of the outlined 
unit cells in (e) and (f) correspond to each other. The inset in (b) shows a sketch of reciprocal space geometry with boundaries of the 
and 1 × 1 SBZs given by solid black and dashed blue lines, respectively. (c) and (g) Experimental ARPES spectra and (d) and (h) calculated electronic band structures. In the calculated band structures, the size of green circles corresponds to the strength of the surface character summed over all orbitals at a particular k|| value.
