nearest neighbor method
6.The effect of correction of self-consistent potential on electronic structure in simple cubic nanocrystal particles is calculated by means of the Greens function method in the tight-binding approximation, taking only the nearest neighbor matrix elements into account.The numerical results show that the electronic energy spectrum is shifted, the chemical potential is not equal to the atomic energy level, the electronic density at each lattice point is changed, and the variation of electronic density at surface lattice point is the largest.
