Nano Archive

Polarization effects in the resonance tunnel spectroscopy of point defects and single nanoparticles

Dalidchik, F. and Kovalevskii, S. and Balashov, E. (2009) Polarization effects in the resonance tunnel spectroscopy of point defects and single nanoparticles. Nanotechnologies in Russia, 4 . pp. 448-452.

Full text is not hosted in this archive but may be available via the Official URL, or by requesting a copy from the corresponding author.

Official URL: http://dx.doi.org/10.1134/S1995078009070052

Abstract

The effect that strong electric fields produced by the probe tip of a scanning tunnel microscope has on the position and form of resonance features in the tunneling spectra of point defects and single nanostructures is considered in this paper. It is demonstrated that allowing for the nonlinear Stark effect in the resonance tunneling theory makes it possible to predict the number of qualitatively new spectroscopic effects, each of which are useful in recovering the electron polarizability of the states under probing. A novel ``polarization`` mechanism is described for the development of the negative differential resistances of the tunneling nanocontacts. The results of experiments on the resonance tunnel probing of point defects of tungsten nanooxides, single Pd atoms, and CuPc (metal-phthalocyanine) molecules deposited on ultrathin aluminum oxide films are interpreted.

Item Type:Article
Additional Information:10.1134/S1995078009070052
ID Code:7661
Deposited By:Prof. Alexey Ivanov
Deposited On:11 Nov 2009 07:55
Last Modified:11 Nov 2009 08:00

Repository Staff Only: item control page