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)†
       
TER ratio as functions of (a) the thickness of BaTiO3 and (b) the thickness of SrTiO3. The dashed line denotes that the polarization of the interfacial dipole is fixed and points to the right, and the solid line stands for the left direction of P in. Here, the interfacial dielectric constant is chosen as 50 ε 0.