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.
Radio frequency surface plasma oscillations: Electrical excitation and detection by Ar/Ag(111) / Serrano G.; Tebi S.; Wiespointner-Baumgarthuber S.; Mullegger S.; Koch R.. - In: SCIENTIFIC REPORTS. - ISSN 2045-2322. - STAMPA. - 7:(2017), pp. 9708-9715. [10.1038/s41598-017-10170-y]
Radio frequency surface plasma oscillations: Electrical excitation and detection by Ar/Ag(111)
Serrano G.;
2017
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.File | Dimensione | Formato | |
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