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Tom MacElwee

what is the maximum ramp energy usable in DEMONs?

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    Mark Lundstrom

    There is probably a limit inside the program, but I don’t know what it is. On the other hand, I’ve never used more than 0.3eV. Demons uses a simple, nonparabolic E(k). The bandstructure limited velocity for most semiconductors is about 1e8 cm/s, Higher ramp energies will produce higher velocities – you should be sure that you don’t get velocities above 1e8 cm/s.

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      Tom MacElwee

      Thanks Mark for the answer. I am trying to study a thin 1nm to 3nm thick silicon film in a thicker SiO2 film of 10nm thickness or more. I pass a current through this oxide/Si stack by Fowler-Nordheim injection and the hot electrons in the oxide have energies of at least 2.5eV to 3eV. I was hopeing to use DEMON\‘s to study how effective the thin Si film was at slowing down the hot electrons. It sounds like DEMON\‘s is not the right tool to study this effect. Am I correct? Thanks for your time here.

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