Discussion Forum

I am using Comsol 5.4. I am working on a 2-D axisymetric model of an RRAM. In the first study I am assuming a conductive filament of high oxygen vacancy concentration(see Fig.1). After applying a triangular pulse of positive polarity and solving a Coefficient form PDE(see Fig.2 for initial condition) at the end of pulse the filament is broken(Fig.3). Up untill now everything is fine. For my second part of operation I have to include a generation (source term in coefficient form PDE Fig.4 and Fig.5) and apply a triangular pulse of negative polarity so that filament is remade. For this I have to use the previously broken filament condition(Fig.2) as an initial condition for my second part of operation. How should I proceed to do the above task? ** **If I want to see the I-V characteristics of both operation simultaneously how do I do that?