Strain-induced insulator–metal transition in ferroelectric BaTiO
3
(001) surface: First-principles study
Yang Lin
1
, Wang Chang-An
1
, Liu Cong
1
, Qin Ming-Hui
1
, Lu Xu-Bing
1
, Gao Xing-Sen
1
, Zeng Min
1, †,
, Liu Jun-Ming
1, 2
Band gap as a function of isotropic strain
ε
for TiO
2
-terminated BTO (001) surface.