Fig. 3: Inverse out-of-plane dielectric susceptibility.
From: Strain control of layer-resolved negative capacitance in superlattices
Inverse out-of-plane dielectric susceptibility \({\chi }_{33}^{-1}\) for bulk STO (blue squares), bulk BTO (red circles), bulk BST (orange diamonds), and the SL (black circles). The strain is calculated with respect to the same equilibrium lattice constant defined in the “Methods” section.
