J. Callaway et al., EXACT DIAGONALIZATION STUDIES OF THE LATTICE ANDERSON MODEL ON A 4-SITE CLUSTER, Physica. B, Condensed matter, 199, 1994, pp. 316-318
We report exact diagonalization calculations of the spectral weight fu
nctions and densities of states for the lattice Anderson model for a f
our-site (square) cluster. A half-filled situation is considered. The
model parameters are chosen so that the system which is simulated vari
es from a conventional insulator to a Kondo insulator.