RENORMALIZATION-GROUP APPROACH ON NANOSTRUCTURED SYSTEMS

The electronic spectra of one-dimensional nanostructured systems are c alculated within the pure hopping model on the tight-binding Hamiltoni an. By means of the renormalization group Green's function method, the dependence of the density of states on the distributions of nanoscale d grains and the changes of values of hopping integrals in nanostructu red systems are studied. It is found that the frequency shifts are dep endent rather on the changes of the hopping integrals at nanoscaled gr ains than the distribution of nanoscaled grains.