[Getdp] Magnetic Vector Potential

[Kubicek Bernhard]

Hello once more,
Does someone maybe know, weather/how it is possible to calculate a 3d
tree-gauged magnetic vector potential created by a 2d(!) surface current
embedded in the 3d geometry?
My current estimate is that the 2d conductor needs to have a "shadow"
face, but also then, the field would be singular on the cell-edges on
the surface?
  +-----+
 /     /|
+-----+ |
|     | |
|  -  | +
|     |/
+-----+
Thank you very much,
 Bernhard