Fominykh, N. and Henk, J., Berakdar, J., Bruno, P., Gollisch, H., Feder, R.
In: Many Particle Spectroscopy of Atoms, Molecules, Clusters, and Surfaces pp 461-470 (Eds.) Berakdar, J. and Kirschner, J., Kluwer Academic/Plenum Publishers, New York, USA 2001A general theory of double-electron photoemission (DPE) from solid surfaces is sketched. Guided by the one-step model of single-electron photemission (SPE), DPE can be related closely to SPE if the electronic correlation is approximated by a local but wave-vector-dependent effective one-particle potential. Numerical results for DPE from Cu(001) confirm the expected manifestation of the electronic correlation, in particular the correlation hole.
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