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← ScienceWhich mechanism limits electron mobility at interfaces in graphene nanoribbons?
A)Edge state backscattering✓
B)Umklapp phonon scattering
C)Intervalley Auger recombination
D)Polaron formation dynamics
💡 Explanation
Edge state backscattering limits mobility at graphene nanoribbon boundaries because localized edge states induce electron reflections, reducing mean free path; therefore it hinders transport, rather than phonon or carrier-based mechanisms usually dominant in bulk materials.
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