Abstract
The momentum-resolved electronic structure of ultrathin films of Ni on Cu(001) is investigated by angle-resolved photoemission in the thickness range between 2 and 6 monolayers and by first-principles slab calculations. While the -band Fermi surface of Ni shows a full three-dimensional bulklike topology down to the thinnest films, the -band Fermi surface rearranges from a bulklike configuration in the thick films to a two-dimensional topology in the thinnest films. The reduced number of holes in the thin films is explained with the rearrangement of the characteristic -point lobe of the Ni Fermi surface.
3 More- Received 31 October 2008
DOI:https://doi.org/10.1103/PhysRevB.79.155404
©2009 American Physical Society