Extended Data Fig. 2: ARPES data of PdSe2 in kz and ks.
From: Dark states of electrons in a quantum system with two pairs of sublattices
a-d, Complete set of ARPES data taken at 80 K along kz. The light polarisation and scattering plane are shown by p-pol / xz (a), s-pol / xz (b), p-pol / yz (c), and s-pol / yz (d), as marked on the top. e-l, Complete set of ARPES data taken along ks. The light polarisation and scattering plane are shown by p-pol / s1z (e,i), s-pol / s1z (f,j), p-pol / s2z (g,k), and s-pol / s2z (h,l), where s1 and s2 are two diagonal directions, as shown on the top. The photon energy is 87 eV for kz = Γ6 (e-h) and 119 eV for kz = Γ7 (i-l), as shown on the left. After background normalisations, the same colour scale is applied to each pair of data taken with p-polarised and s-polarised light. Grey dotted lines indicate the expected ___location of valence bands. It could be identified that the valence bands of PdSe2 centred at Γ007 and Γ009 are dark states, regardless of scattering planes.
