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Which 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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