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← ScienceWhich 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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