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Radio frequency surface plasma oscillations: electrical excitation and detection by Ar/Ag(111).


ABSTRACT: We electrically excite surface plasma oscillations on a Ag(111) single crystal by alternating electric charging at radio frequency. The radio frequency signal energy of 2.2 μeV, used to induce surface plasma oscillations, is about 5 to 6 orders of magnitude lower than the plasmon energies reachable by optical excitation or electron impact. The detection of the surface plasma oscillations is achieved by nano-fabricated 2D single-crystal sensor-islands of Ar atoms, which are shown by imaging with a scanning tunneling microscope to restructure in response to the radio frequency surface plasma oscillations, providing nanometer spatial resolution and a characteristic decay time of ≈150 ns.

SUBMITTER: Serrano G 

PROVIDER: S-EPMC5574974 | biostudies-literature |

REPOSITORIES: biostudies-literature

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