Drift velocity
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High Quality Content by WIKIPEDIA articles! The drift velocity is the average velocity that a particle, such as an electron, attains due to an electric field. In general, an electron will rattle around in a conductor at the Fermi velocity randomly. An applied electric field will give this random motion a small net velocity in one directionIn a semiconductor, the two main carrier scattering mechanisms are ionized impurity scattering and lattice scattering. Because current is proportional to drift velocity, which is, in turn, proportional to the magnitude of an external electric field, Ohm's law...
High Quality Content by WIKIPEDIA articles! The drift velocity is the average velocity that a particle, such as an electron, attains due to an electric field. In general, an electron will rattle around in a conductor at the Fermi velocity randomly. An applied electric field will give this random motion a small net velocity in one directionIn a semiconductor, the two main carrier scattering mechanisms are ionized impurity scattering and lattice scattering. Because current is proportional to drift velocity, which is, in turn, proportional to the magnitude of an external electric field, Ohm's law can be explained in terms of drift velocity. Drift velocity is expressed in the following equations: , where Jdrift is the current density , is charge density in units C/m3, and vavg is the average velocity of the carriers(drift velocity) where is the electron mobility in (m/s)/(V/m) and E is the electric field in V/m
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