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Which outcome occurs when adsorbed hydrogen quenches graphene plasmons?

A)Decreased electron mean free path
B)Enhanced electron phase coherence
C)Increased Raman scattering intensity
D)Suppressed electron-phonon interactions

💡 Explanation

Decreased electron mean free path occurs because adsorbed hydrogen introduces defects, which increases electron scattering via Impurity scattering; therefore, the plasmon is quenched rather than enhanced because momentum randomization becomes dominant.

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