Energy bands of (110) copper thin films

Abstract

A tight-binding calculation of the energy bands of a 47-layer (110) copper thin film is performed using the same set of 34 Hamiltonian matrix-element parameters that we used in our (100) thin-film calculation. The bands are calculated at 88 points in the irreducible 1/4 rectangular two-dimensional Brillouin zone both with and without a surface-parameter shift. The planar and total densities of states are presented. The energy bands display a wealth of surface bands whose exact nature is sensitive to surface-parameter shifts.