The discontinuity in the lattice periodic potential at surfaces often leads to the creation of new electronic surface states. We developed a photoemission based Fermi surface tomography whose surface sensitivity allowed us to quantify the charge redistribution on the Be(0001) surface. The volume enclosed by the bulklike Fermi surface is significantly reduced at the surface, consistent with the charge transfer to the two surface states as estimated from the area within their two-dimensional Fermi contours. This result represents the first quantification of the charge redistribution on a natural surface termination.
Three-dimensional tomography of the beryllium fermi surface: Surface charge redistribution / I. Vobornik, J. Fujii, M. Hochstrasser, D. Krizmancic, C.E. Viol, G. Panaccione, S. Fabris, S. Baroni, G. Rossi. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 99:16(2007), pp. 166403.1-166403.4.
Three-dimensional tomography of the beryllium fermi surface: Surface charge redistribution
G. RossiUltimo
2007
Abstract
The discontinuity in the lattice periodic potential at surfaces often leads to the creation of new electronic surface states. We developed a photoemission based Fermi surface tomography whose surface sensitivity allowed us to quantify the charge redistribution on the Be(0001) surface. The volume enclosed by the bulklike Fermi surface is significantly reduced at the surface, consistent with the charge transfer to the two surface states as estimated from the area within their two-dimensional Fermi contours. This result represents the first quantification of the charge redistribution on a natural surface termination.File | Dimensione | Formato | |
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