Two- and three-dimensional band structure of ultrathin Ni on Cu(001)

Hoesch, M; Petrovic, V N; Muntwiler, M; Hengsberger, M; Lobo-Checa, J; Greber, T; Osterwalder, J (2009). Two- and three-dimensional band structure of ultrathin Ni on Cu(001). Physical Review B, 79(15):155404-10pp.

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 sp-band Fermi surface of Ni shows a full three-dimensional bulklike topology down to the thinnest films, the d-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 d holes in the thin films is explained with the rearrangement of the characteristic K-point lobe of the Ni Fermi surface.

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 sp-band Fermi surface of Ni shows a full three-dimensional bulklike topology down to the thinnest films, the d-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 d holes in the thin films is explained with the rearrangement of the characteristic K-point lobe of the Ni Fermi surface.

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6 citations in Scopus®