A Comprehensive Modeling Framework for Ferroelectric Tunnel Junctions

A modeling framework for ferroelectric tunnel junctions (FTJs) that considers nonpolar interfacial layers (ILs), multi-domain polarization, and complete ferroelectric/ capacitive/tunneling currents simultaneously is proposed. This model explains both read and write operations including the controversial switching polarities of FTJ. We also provide useful guidelines for optimizing FTJ performance where the location of IL and the effective thickness ratio between ferroelectric and interfacial layers are found to be most critical.