Two-dimensional metallic behavior at polar MgO/BaTiO<sub>3</sub> (110) interfaces<xref ref-type="fn" rid="cpb142049fn1">*</xref>

Two-dimensional metallic behavior at polar MgO/BaTiO₃ (110) interfaces*

Du Yan-Ling^a),^b), Wang Chun-Lei^a), Li Ji-Chao^a)†, Zhang Xin-Hua^a), Wang Fu-Ning^a), Liu Jian^a), Zhu Yuan-Hu^a), Yin Na^a), Mei Liang-Mo^a)

(a) The 3D isovalue surface (yellow contour) of the local density of states of the interface MgO layer contributing to the peak at the Fermi level, and it is the top view of the interface in Fig. 8(a) . (b) The PDOS of the O 2p states in the interface MgO layer.