Effect of vacuum on carrier mobility

Dear Developers,

I am using amset to model carrier mobilities in 2D materials. I have following queries:

  1. How to take into account effect of vacuum on elastic constants?
  2. As the transport coeffcient will have dependence on volume- wiill it have some effect of r mobility as well? Should we scale the output mobilities by volume and thickness of 2D layer?

Any pointer on this will be very helpful.

Best,
AK

Dear Alex,

  1. I’m not familiar with calculating the elastic constants of 2D materials, so it isn’t obvious to me how to take the vacuum into account.

  2. The transport coefficients shouldn’t have a dependence on the vacuum height, unless there is some interaction occurring across the layers. There is no need to scale the output mobilities.

Best,
Alex

Thanks Alex.

This helps.