Which mechanism causes an indirect band gap’s lower electron mobility?

💡 Explanation

Intervalley phonon scattering decreases mobility because electrons need a phonon interaction for momentum change due to wavevector difference; therefore, electron transitions slow, rather than direct transitions requiring minimal momentum assistance.

• Which mechanism limits electron delocalization across peptide bonds?
• Which electronic transition requires the least energy in a conjugated polyene molecule?
• Which mechanism undermines magnetic confinement in fusion reactors?
• Which risk increases when laser cutting thick steel?
• Which consequence results when a fluid exceeds laminar flow?
• Which transition occurs as Reynolds number increases within arterial blood flow?