Figure 4
Crystal structure models (ball and stick on left, atom filling on right) for the relaxed structures of phases where n = 0, 2 and 4 on zone axis. Trigonal PbS from literature is also shown. Layer stacks and their corresponding widths are labelled on the top of each. Atom arrangements (red = Bi, blue = Te, yellow = S and green = Pb) depicting the structure are plotted along the (hkil) planes, i = −(h+k). A crystallographic information file (CIF) is provided in the supporting information. |