Effect of surface interband transitions on surface plasmon dispersion: O/Ag(001)

Authors
Savio, L Vattuone, L Rocca, M
Citation
L. Savio et al., Effect of surface interband transitions on surface plasmon dispersion: O/Ag(001), PHYS REV B, 61(11), 2000, pp. 7324-7327
Citations number
31
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
10980121 → ACNP
Volume
61
Issue
11
Year of publication
2000
Pages
7324 - 7327
Database
ISI
SICI code
1098-0121(20000315)61:11<7324:EOSITO>2.0.ZU;2-1
Abstract
The effect of surface interband transitions (SIT) on surface plasmon disper sion was investigated by high-resolution electron-energy-loss spectroscopy for Ag(001). We demonstrate that the anomalous linear dispersion on this fa ce, which is at variance with the parabolic form present for the other low Miller index surfaces, is due to a SIT between Shockley states that nearly matches the surface plasmon frequency. The anomaly is eliminated when the s ubstrate undergoes a missing-row reconstruction induced by oxygen adsorptio n that removes the SIT.