Fig. 2: ARPES measurements and DFT calculation of the band structure of 1T-CrTe₂ thin films.

a Schematic of the bulk and projected Brillouin zones of CrTe₂. b ARPES spectrum of a single layer of 12 u.c. CrTe₂ in the \(\bar{\Gamma }-\bar{{{{{{\rm{M}}}}}}}\) direction. c DFT calculation of the band structure of bulk CrTe₂. The M and K points are 0.92 and 1.06 Å⁻¹ respectively. d, e ARPES spectrum of the 4 u.c. ZrTe₂ (left), ZrTe₂ (4 u.c.)/CrTe₂ (1 u.c.) (middle), and ZrTe₂ (4 u.c.)/CrTe₂ (3 u.c.) (right) with a larger (d) and smaller (e) binding energy scale. All the ARPES data were taken at 300 K with 21.2 eV excitation from a He lamp. To more clearly highlight the measured band dispersion, we present all plots as second-derivatives with respect to the energy. The red dashed lines are guides to the eyes for the Dirac dispersion in ZrTe₂.