Large Room-Temperature Electroresistance in Dual-Modulated Ferroelectric Tunnel Barriers
Greta Radaelli , Diego Gutiérrez , Florencio Sánchez , Riccardo Bertacco , Massimiliano Stengel , and Josep Fontcuberta
Adv. Mater. 2015, DOI: 10.1002/adma.201405117
Pt/BaTiO3/La0.7Sr0.3MnO3 tunnel junctions.
It is demonstrated that reversing the polarization direction of a ferroelectric barrier in a tunnel junction leads to a change of junction conductance and capacitance, with concomitant variations on the barrier height and effective thickness, both contributing to produce larger electroresistance