Fig. 1: Crystal structures and Fermi surfaces of Ca2-xSrxRuO4 (CSRO).
From: Signature of Kondo hybridisation with an orbital-selective Mott phase in 4d Ca2−xSrxRuO4
Top and side view of the CSRO crystal structure a without distortion (\(1.5 \le x \le 2.0\)), b with rotation (\(\Phi ,\;0.5 \le x\, < \,1.5\)) and c with both rotation and tilting (\(\Theta ,\;0.0 \le x\, <\, 0.5\)). Fermi surfaces (FSs, integrated over the Fermi level (EF) ± 20 meV) of x = d 2.0, e 0.5, f 0.2 measured at T = 10 K. Colour-coded dots indicate the Lorentzian-fitted peak positions of α (green), β (brown) and γ (red) FS pockets obtained from the momentum distribution curves (MDCs). The black dashed lines in d–f indicate the reduced Brillouin zone (BZ) induced by octahedral distortions. High-symmetry points in the corresponding symmetry are marked for each substitution (x). The right lower part of each panel shows a 2D-curvature plot50 of the FS map. All the data were measured with π-polarised light (hv = 70 eV, Supplementary Fig. 2).
