Hi,
I am designing an sample cell for an upcoming electron transport experiment. I would like to simulate it to better understand the electrostatic environment present in thee device. Essentially I have an array of concentric electrodes fabricated under a layer of sapphire on top of this is a thin layer of liquid helium which supports a 2D electron gas. In my first attempt, I created a 3D model of the device without the 2D electron gas, and was able to simulate the potential with no issue. Once I added the layer of 2D electrons, I started having issues. In my initial attempt, I tried to add a surface to the model, then place a charge excitation on the surface. This immedeiately caused the simulations to have issues. In subsequent models, I insteead added an infinitely thin cylinder of metal and put a floating charge excitation on it, but this also did not work (it did finish the simulation, but it gave nonsense results). When trying to get this to run I also ran into meshing errors. Another idea I had would be to create 1 2D model than use a 1d line of charge to model the 2D chargee sheet, but I have yet to attemt this.
So my question is this: What is it possible to model a 2D electron gas in Ansys Maxwell? If so what is thee best way to do this? If not, is there another Ansys product that I could use instead?
For contenxt I am running these simulations on a server with 2x 24 core 2.7Ghz processers and 512gb of RAM (so I am not sure if I have any technological limitations, but I might.)Â
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