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Molecules and Crystals

Problem 6.212

In Hall effect measurements in a magnetic field with induction B=5.0kGB=5.0 \mathrm{kG} the transverse electric field strength in an impurity-free germanium turned out to be η=10\eta=10 times less than the longitudinal electric field strength. Find the difference in the mobilities of conduction electrons and holes in the given semiconductor.

Reveal Answer
∣u0−−u0+∣=1/ηB=0.20 m2/(V⋅s)\left|u_{0}^{-}-u_{0}^{+}\right|=1 / \eta B=0.20 \mathrm{~m}^{2} /(\mathrm{V} \cdot \mathrm{s})
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