Spectral Measurement of Photon Emission from Individual Gold Nanoparticles Using Scanning Tunneling Microscopy

Authors S.A. Nepijko1 , A. Chernenkaya1, K. Medjanik1, S.V. Chernov1, A.A. Sapozhnik1 , L.V. Odnodvorets2 , I.Yu. Protsenko2 , W. Schulze3, G. Ertl3, G. Schönhense1

1 Institute of Physics, University of Mainz, 7, Staudingerweg, 55128 Mainz, Germany

2 Sumy State University, 2, Rymskogo-Korsakova St., 40007 Sumy, Ukraine

3 Fritz Haber Institute of the Max Planck Society, 4-6, Faradayweg, 14195 Berlin, Germany

Issue Volume 8, Year 2016, Number 2
Dates Received 19 May 2016; revised manuscript received 10 June 2016; published online 21 June 2016
Citation S.A. Nepijko, A. Chernenkaya, K. Medjanik, et al., J. Nano- Electron. Phys. 8 No 2, 02039 (2016)
DOI 10.21272/jnep.8(2).02039
PACS Number(s) 68.55.Nq, 71.20.Be, 71.20.Eh
Keywords Electron-photon spectroscopy, Gold nanoparticle (3) , Scanning tunneling microscope (STM).
Annotation The light emission spectra of individual Au nanoparticles induced by a scanning tunneling microscope (STM) have been investigated. Two-dimensional ensembles of tunnel-coupled Au particles were prepared by thermal evaporation onto a native oxide silicon wafer in ultrahigh vacuum (10 – 9 mbar). Our STM measurements show a single peak at photon energy 1.6 eV in the tunneling mode and two peaks at 2.2 eV (connected with the Mie plasmon) and 1.45 eV (a new peak which was not discussed in literature before) in the field emission mode.

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