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- W2954497776 abstract "Recent theoretical considerations have demonstrated that freestanding graphene doped with alkali metals (AC x ) supports strong Dirac and weak acoustic plasmons. Here we show that when AC x is deposited on a metallic surface, the intense Coulomb screening completely washes out these collective modes. However, even small increase of separation between AC x and metallic surface causes recovery of AC x plasmonic properties and especially the enhancement of acoustic plasmons intensities not present in the freestanding case. We further provide the physical background of these intriguing phenomena. The studied systems consist of lithium- and cesium-doped graphene deposited on Ir(111) surface." @default.
- W2954497776 created "2019-07-12" @default.
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- W2954497776 date "2019-11-04" @default.
- W2954497776 modified "2023-10-15" @default.
- W2954497776 title "Strong acoustic plasmons in chemically doped graphene induced by a nearby metal surface" @default.
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- W2954497776 doi "https://doi.org/10.1103/physrevb.100.195401" @default.
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