Influence of interface within the composite barrier on the tunneling electroresistance of ferroelectric tunnel junctions with symmetric electrodes*
Wang Pin-Zhia),b), Zhu Su-Huab), Pan Taoc), Wu Yin-Zhongb),c)†
       
(a) Potential energy profile − eφ (eV) and (b) depolarization field within the barrier. Arrows represent the direction of ferroelectric polarization. Solid lines correspond to the case that the interface is considered, dashed lines and dotted lines stand for the situation where the interface is replaced by an SrTiO3 monolayer and a BaTiO3 monolayer, respectively. Shadow region represents the interface.