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}

Total density of states of the TiO₂-terminated BTO (001) surfaces for several selected epitaxial strains. (a) ε = −0.05, (b) ε = −0.0475, (c) ε = −0.03, (d) ε = 0.