Correlations in nanoclusters of narrow-band metals: Numerical simulation of Auger-electron spectra

Calculations of energy and wave functions of ground and low-lying excited states of small clusters of transition metals are carried out using the method of the exact diagonalization of Hamilton matrix of the extended Hubbard model. The binding energy of two holes in the cluster is calculated, the possibility of their effective attraction is shown in the wide range of the interaction parameters. One-particle and two-particle densities of states are analyzed, and the Auger-electron spectra confirming the presence of the bound state are obtained.

► Low-lying excited states of small clusters of transition metals are calculated.
► The binding energy of two holes in the cluster is calculated.
► One-particle and two-particle densities of states are analyzed.
► The Auger-electron spectra confirming the presence of the bound state are obtained.