Drude model for steady-state electron transport (via the drift mechanism) in a semiconductor sample is given by , where the symbols have their usual meaning.
a)How does the model capture different potential/forces an electron “feels” around it.
b)For a semiconductor crystal, briefly explain how m* is derived.
c)Show that for a long device (where, holds good), Drude model essentially leads to Ohm’s law.
d)Using the model, explain why resistance of a metal sample increases with temperature.
e)According to the Drude model, for a given electric field intensity, what practical measures can you take to boost the current drive capability of a device (MOSFET)