How to calculate DOS/band diagram of scattering region for different gate bias.

[Ash]

Hello everyone,
Please help me find out the DOS and band diagram variation corresponding to the scattering region of any MOSFET like device at different gate biases?

[Ash]

Or please suggest me alternative ways to explain the I-V characteristics at different gate biases. I would highly appreciate your replies and suggestions !! 

[Anders Blom]

See answer to other post. The LDOS is also very useful, see e.g. PRB 85 184426 (2012) (although no gate was involved there).

[Ash]

Thanks Dr. Blom for the reply and helpful link !!