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 total density of states as a function of the BaTiO₃ thickness for 1–4 ML thick BaTiO₃ films on MgO (110). (b) The layer-resolved density of states for 4 ML BaTiO/MgO (110).