Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193, Bellaterra, Catalonia, Spain; LNESS-Dipartimento di Fisica del Politecnico di Milano, Via Anzani 42, 22100, Como, Italy.
Adv Mater. 2015 Apr 24;27(16):2602-7. doi: 10.1002/adma.201405117. Epub 2015 Mar 16.
Pt/BaTiO3/La0.7Sr0.3MnO3 tunnel junctions, at negative voltage bias, for two polarization directions are represented. 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.
Pt/BaTiO3/La0.7Sr0.3MnO3 隧道结，在负电压偏置下，代表了两种极化方向。结果表明，在隧道结中反转铁电势垒的极化方向会导致结电导和电容的变化，同时势垒高度和有效厚度也会发生相应变化，这两者都有助于产生更大的电阻变化。
