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Which mechanism determines electron mobility in gallium arsenide?

A)Band structure effective mass
B)Phonon scattering rate decrease
C)Dopant impurity ion neutralization
D)Auger recombination rate decline

💡 Explanation

The band structure directly influences electron mobility because electrons experience varying effective masses depending on the energy band's curvature; therefore lower electron effective mass increases mobility, rather than phonon scattering which inhibits or dopant neutralization which is unrelated.

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