Figure 3: Model of the hysteretic behaviour in FE-OSV.
From: Active control of magnetoresistance of organic spin valves using ferroelectricity

The relation between the effective bias on the spacer Alq3 (Veff), the applied bias at measurement (VMR) and the vacuum level shift (Δ) by the remanent dipole moments of the FE PZT layer, is Veff=VMR+Δ.