The electronic structure of 1, 2 and 5 monolayers (ML) of AlAs(100) buried
in GaAs has been investigated by ab initio calculations. Distinct differenc
es are observed in the density of states (DOS). In particular, interface st
ates are found for the I-ML case and the outermost layer of the thicker sla
bs. (C) 2000 Elsevier Science B.V. All rights reserved.