Effects of plasmon energetics on light emission induced by scanning tunneling microscopy (CROSBI ID 214375)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Miwa, K. ; Sakaue, M. ; Gumhalter, Branko ; Kasai, H.
engleski
Effects of plasmon energetics on light emission induced by scanning tunneling microscopy
A theoretical model of plasmon and molecular luminescence induced by scanning tunneling microscopy using a molecule-covered tip on clean metal surfaces is developed. The effects of coupling between molecular exciton and interface plasmon on the luminescence spectra are investigated for variable energy of plasmon modes by means of the nonequilibrium Green's function method. It is found that spectral features arising from interference between the processes of energy absorption by the molecule and interface plasmons appear near the energy of the excitonic mode. For the energy of plasmon above (below) the energy of excitonic mode, an additional peak structure appears in the energy range slightly below (above) the energy of the excitonic mode. Prominent peak and dip structures observed in recent luminescence experiments are interpreted by the developed theory whereby its utility in the fields of plasmonics and nanophotonics is demonstrated.
luminescence iduced by STM; nanophotonics; nonequilibrium Green's functions
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Podaci o izdanju
26
2014.
222001-1-222001-6
objavljeno
0953-8984
10.1088/0953-8984/26/22/222001