Scanning Tunneling Microscopy/Spectroscopy Investigations of the Interference Effects Caused by the Circular Pits on the Thermally Oxidized graphite Surface

• Authors: Z. Klusek , M. Kalinowski , W. Olejniczak , P. Kobierski
• Languages of publication: EN

Abstracts

EN

The thermal oxidation of the graphite leads to the removal of monoatomic carbon layers from the surface and formation of circular pits on the exposed plane. Near the pit edges the scanning tunneling spectroscopy measurements show a series of very narrow flat regions on the I/V characteristics. The observed I/V flat regions appear only when the characteristic is recorded very close to the pit edges. The appearance of tunneling current steps can be explained by the oscillating character of the local density of states near the pit edges. A simple quantum mechanical model in 2D based on boundary condition for an electron wave function is proposed.

Keywords

EN

33.60.Fy; 61.16.Ch; 71.20.-b

Discipline

• 71.20.-b: Electron density of states and band structure of crystalline solids

• Journal: Acta Physica Polonica A
• Year: 1998
• Volume: 93
• Issue: 2
• Pages: 415-420

Dates

published

1998-02

Contributors

author

Z. Klusek

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

author

M. Kalinowski

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

author

W. Olejniczak

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

author

P. Kobierski

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

Identifiers

DOI

10.12693/APhysPolA.93.415