Generalization of the Lloyd model for calculation of electronic structure at disordered interfaces

D.E. RODRIGUES; J.F. WEISZ

PHYSICAL REVIEW B - CONDENSED MATTER AND MATERIALS PHYSICS

American Physical Society

Año: 1986 vol. 34 p. 2306 - 2310

0163-1829

A model is explored which permits the efficient computation of density-of-states profiles at disordered interfaces. The disorder is included by means of changes in the energy of the orbitals within a tight-binding approximation and may be inhomogeneous in the direction perpendicular to the interface. The density of states is found for different interface layers of a cubic lattice and the effects of the disorder are studied, particularly the possible existence of Tamm states near the surface of disordered systems.