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Electron correlations; persistent currents; Fano resonances

We numerically study the effect of non-symmetry dictated nodes (NSDN) on electron correlation effects for spinless electrons. We find that repulsive interaction between electrons can enhance the overlap between nearest neighbors in the tight binding Hamiltonian, in the presence of NSDN. Normally, in the absence of NSDN, attractive interaction between electrons give such an effect and repulsive interaction gives the opposite effect.

P Singha Deo¹

1. S.N. Bose National Centre for Basic Sciences, J.D. Block, Sector III, Salt Lake City, Kolkata - 700 098, India

Published

February 2002