Scanning tunneling spectroscopy investigations of gold films deposited on the (0001) basal plane of highly oriented pyrolitic graphite

• Autorzy: Klusek Z. , Balcerski J. , Olejniczak W. , Kobierski P.
• Konferencja: Seminar on Surface and Thin Film Structures (5 ; 23-26.09.1997 ; Ustroń, Poland)
• Języki publikacji: EN

Abstrakty

EN

Gold was thermally evaporated onto (0001) basal plane of highly oriental pyrolitic graphite surface at substrate temperature ranging from 20°C to 600°C. The evaporation rate was varied in the range from 0.02nm/s to 1nm/s. Scanning tunneling microscopy/spectroscopy investigations were carried out in constant current mode under ambient air condition. Gold films exhibit an increasing grain size and grain flattening as the substrate temperature increases and evaporation rate decreases. At higher temperatures (T>300°C) and low evaporation rate (0.02 nm/s) flat terraces with dimension of order 50÷ 250 nm were formed. On the flat terraces scanning tunneling spectroscopy measurements (dI/dV)(I/V) were performed. At the unoccoupied part of the spectra characterstic feature could be distinguished at around 0.6 eV below the Fermi level. The observed feature resembles the well known surface state on the Au(111) plane which exists within the au L2 gap. This is in spite of the fact that spectra were recorded in ambient air conditions.

• Wydawca: Institute of Electron Technology
• Czasopismo: Electron Technology
• Rocznik: 1998
• Tom: Vol. 31, No. 3/4
• Strony: 512--515
• Opis fizyczny: Bibliogr. 6 poz.

Twórcy

autor

Klusek Z.

autor

Balcerski J.

autor

Olejniczak W.

autor

Kobierski P.

• Departament of Solid State Physics, University of Łódź, ul. Pomorska 149/153, 90-236 Łódź, Poland