Pixel Current Artefact

[Kyroba]

When attempting a nanoSQUID simulation, I noticed a strange current spike stuck in a specific location of the loop. This current spike does not move or react to applied fields. You can see it just below the left weak-link (25mT applied field no bias):

The first thing I went to check was the mesh to see if there is some kind of dislocation:

But it doesn't seem like anything is wrong. Changing mesh parameters moves the artefact around, but I can never get rid of it. I have also iteratively removed each polygon to see if something was causing the issue, and to my surprise, I saw this artefact in a plain square film with no holes. The only way I was able to get rid of it was to use entirely different xi and lambda values.

length_units = "nm"
# Material parameters
xi = 25
london_lambda = 100
d = 5
layer = tdgl.Layer(coherence_length=xi, london_lambda=london_lambda, thickness=d, gamma=10)