Giant tunneling electroresistance in ferroelectric tunnel junctions successfully obtained in a newly suggested scheme

https://phys.org/news/2022-04-giant-tunneling-electroresistance-ferroelectric-tunnel.html

"band of ferroelectric barrier decreases from left to right... valence band distribution in whole barrier is relatively flat and VBM is below Fermi energy, without occurrence of partial metallization... occurrence and disappearance of partial metallization in two polarization states change effective barrier width significantly and lead to low and high resistance states, with giant TER ratio achieved subsequently...  negatively charged polar interface based on interfacial substitution... large TER ratio in FTJs"