Fig. 2: The electronic band structures of HfRuP without (a) and with (b) SOC.
From: Topological electronic states in HfRuP family superconductors
The irreducible representations of selected bands at K point are indicated. (c) The nodal lines are presented in the \({k}_{z}=0\) plane without SOC. With SOC, the WPs above the \({k}_{z}=0\) plane are labeled as “+”(+1) and “o”(−1) in the first BZ. Here, a*, b*, and c* are the reciprocal primitive vectors. d The \({k}_{z}\) dispersion of the electronic bands through the WP W1 shown in (c). e The dispersion of the WP W1 along the line P-Q shown in (c). The fractional coordinates of W1, P and Q are (0.2761, −0.4654, 0.02439), (0.2603, −0.4603, 0.02439), and (0.2919, −0.4705, 0.02439). Hereafter, the positions of k-points are given in units of (a*, b*, c*). ARPES spectrum (f) and curvature intensity (g) plots of ZrRuAs, showing band structure along H-K-H. For comparison, the calculated band structure along H-K-H is superposed on the experimental data in (g). h–i are the same as (f–g), but along L-M-L.
