nanA/m in calculation of spin wave dispersion

[Nikita Lobanov]

Hi Serban,

I built a geometry consisting of two layers (a magnon crystal made of YIG and a heavy metal layer made of Pt), and everything is constructed correctly (file: test_geom_for_SSW_MC(YIG)_Pt.py). In the file test_SSW_MC(YIG)_Pt.py, I tried to calculate the dispersion for the bilayer and got nanA/m in the visual interface. I tried reducing the time step for the ODE, but it doesn't seem to help. Overall, I don't quite understand how to solve this problem — could you please help me?