Fig. 2. Experimental and calculated Fermi surface and band dispersion of RhBi₂ at T = 40 K.

a Fermi surface plot of the ARPES intensity integrated within 10 meV of the chemical potential and measured with photon polarization along $\overline{\mathrm{\Gamma }}$-$\overline{Z}$ direction. b Band dispersion along the $\overline{\mathrm{\Gamma }}$-$\overline{Z}$ line. c Band dispersion along $\overline{\mathrm{\Gamma }}$-$Ȳ$. d DFT calculations of Fermi surface. e–f DFT calculations of energy dispersion corresponding to the ARPES data (b) and (c), respectively. g band dispersion along $\overline{\mathrm{\Gamma }}$-$\overline{Z}$ measured using photon energy of 21.2eV, unpolarized. h Momentum distribution curves (MDCs) at the chemical potential at photon energy 6.7 ev and 21.2 eV. i Energy distribution curves (EDCs) at the $\overline{\mathrm{\Gamma }}$ and $\overline{Z}$ in two different photon energy. Red arrow marks position of the surface Dirac point at $\overline{\mathrm{\Gamma }}$ (k_z = 0 Å⁻¹) and blue one marks the position at the $\overline{Z}$ (k_z = 4.5 Å⁻¹). Dashed lines are extracted at a photon energy 6.7 eV and sloid ones are extracted at 21.2 eV.