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Photoelectron driven acoustic surface plasmons in p(2x2)K/Be(0001): Ab initio calculations

V. M. Silkin ; Bo Hellsing ; Lars Wallden (Institutionen för teknisk fysik, Fasta tillståndets fysik) ; Pedro Echenique ; Eugene Chulkov
Physical Review B (1098-0121). Vol. 81 (2010), 11, p. 113406 (4 pages).
[Artikel, refereegranskad vetenskaplig]

We report on low-energy dynamical surface response properties of the p(2×2)K/Be(0001) system calculated within a first-principles approach. It is shown that a partly occupied adsorbate-induced quantum-well band dramatically affects the dynamical properties of the beryllium surface. We demonstrate clear evidence that the observed anomalous features in photoemission spectra of this and a similar system can be explained by acoustic surface plasmon excitations.

Nyckelord: Acousic surface plasmons. photoelectron driven process, surface electron dynamics

Denna post skapades 2010-04-09. Senast ändrad 2014-03-24.
CPL Pubid: 119513


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Institutioner (Chalmers)

Institutionen för fysik (GU) (GU)
Institutionen för teknisk fysik, Fasta tillståndets fysik (2005-2015)



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