Fig. 1: Delafossite \({\mathcal{A}}{\mathcal{B}}\)O2 crystal structure.
From: From basic properties to the Mott design of correlated delafossites

(a) \(R\bar{3}m\) and (b) P63/mmc symmetry. \({\mathcal{A}}\) (grey), \({\mathcal{B}}\) (blue) and O (red).