Dielectric screening and band-structure effects in low-energy photoemission

E. E. Krasovskii, V. M. Silkin, V. U. Nazarov, P. M. Echenique, E. V. Chulkov

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Nonlocal response of the surface to the incident light is included into an ab initio one-step photoemission theory. Surface-state normal emission spectra from Be(0001) and Al(100) are calculated by a full-potential scattering method and are found to agree well with the experiment in a wide energy range. The total exciting field is obtained within the random-phase approximation for jellium as well as for one-dimensional crystal models of the two surfaces. Material dependence of the multipole plasmon mode and strong effect of band structure on the photoyield is discussed.

Original languageAmerican English
Article number125102
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number12
StatePublished - 3 Sep 2010
Externally publishedYes


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