Electron Correlation and Shake up Effects on Energy Bands of Low Dimensional Carbon Systems

Abstract

The electron correlation and shake up effects on energy band structures in the diamond and tetrahedral amorphous carbon films (both on the substrate of NiTi alloy), the graphite (thin film) and precipitates of the titanium carbide (in the NiTi matrix) were studied by the Auger electron spectroscopy. The description of carbon spectrum is based on the convolution of two-conduction particles and one-core particle spectral densities. It was concluded that the comparisons of the experimental and theoretical Auger spectra were determined the quantitative assessment of the electron correlation and shake up effects in the carbon systems. We also discuss the electron correlations in a quantum wire/dot or bulk material.