Fig. 4: Thickness-dependent ARPES maps taken along the \({\bar\Gamma \bar{\mathrm{K}}}\) direction. | npj 2D Materials and Applications

Fig. 4: Thickness-dependent ARPES maps taken along the \({\bar\Gamma \bar{\mathrm{K}}}\) direction.

From: Dimensional crossover and band topology evolution in ultrathin semimetallic NiTe2 films

Fig. 4: Thickness-dependent ARPES maps taken along the $${\bar\Gamma \bar{\mathrm{K}}}$$ Γ ¯ K ¯ direction.

a ARPES band maps of 1–5 TL 1 T NiTe2 films measured with 21.218-eV photons at 30 K; the surface bands which form a topological Dirac cone in the bulk limit are identified as TSS in the 5 TL spectra. b Corresponding second-derivative ARPES maps. c Corresponding calculated DFT results; in the calculation results for the 1+2 TL system, the red curves are those for a 1 TL film, and the blue curves correspond to the results for a 2 TL film. d Thickness-dependent ARPES maps from a superimposed with the same calculation data from c; for the 1+2 TL system, the white dashed curves are for the 1 TL result, whereas those of a 2 TL film correspond to the pink dashed curves.

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