I have calculated the same module with gate voltage 0V or without gate using atk12.8.2, meanwhile the air layer is 8A.
It uses MultigridSolver, under the same index, to calculate and get the TMR result of the magnetic tunnel junction is 15.66 and 13.20, respectively.
The shape, position, and the existence of the gate voltage has influences on models.
How to percieve software functions on the gate voltage electric field and the results diversity?
Thanks !