Well, my textbook, Semiconductor Physics and Devices, by Donald A. Neamen, gives a short explanation of electric current on pg. 74 and describes drift current as the summation of all the individual electrons velocities, each of which is much larger than the drift velocity that gives rise to current.I have always understood that they are
and to confirm my thoughts I had to go google searching and found at least 4 sites that confirm that the electron/charge IS oscillating back and forward at the freq of concern
do you have something to the contrary ?
Several wikipedia articles also support this. See the following links:
Also, see page 3 here: http://alan.ece.gatech.edu/ECE3080/Lectures/ECE3080-L-7-Drift - Diffusion Chap 3 Pierret.pdf
The average instantaneous velocity is extremely large. One of wiki's articles gives a velocity of roughly 106 m/s. In comparison, drift velocity is on the order of cm/s or less.