阿摩線上測驗
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4. The phonon-limited mobility increases with decreasing temperature roughly as μph ∝ Τ−3/2. If μph =1500 cm²/V-s for a 1 μm long Si sample at 300 K.
(a) Calculate the drift velocity of electrons in Si at T = 90 K for a field of 102 V/cm.