Strain-induced insulator–metal transition in ferroelectric BaTiO<sub>3</sub> (001) surface: First-principles study

Strain-induced insulator–metal transition in ferroelectric BaTiO₃ (001) surface: First-principles study

Yang Lin¹, Wang Chang-An¹, Liu Cong¹, Qin Ming-Hui¹, Lu Xu-Bing¹, Gao Xing-Sen¹, Zeng Min^{1, †,}, Liu Jun-Ming^{1, 2}

Polarization displacements δ of (a) Ti–O layers and (b) Ba–O layers as a function of isotropic in-plane strain ε in TiO₂-terminated BTO (001) surface.