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ID: 111993.0, Fritz-Haber-Institut / Molecular Physics
Electronic excitations on silver surfaces
Authors:Barman, Sudipto R.; Biswas, C.; Horn, Karsten
Language:English
Date of Publication (YYYY-MM-DD):2004-01-27
Title of Journal:Physical Review B
Journal Abbrev.:Phys. Rev. B
Volume:69
Issue / Number:4
Start Page:045413-1
End Page:045413-9
Copyright:2004 The American Physical Society
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:The surface electronic structure and optical response of Ag has been studied using angle- and energy-resolved photoyield (AERPY) and angle-resolved photoemission spectroscopy (ARPES) using low energy photons (2.7–18 eV). ARPES data for Ag(100) exhibit an unexpected dispersing feature which cannot be assigned to a direct transition peak in the X direction of the bulk Brillouin zone. The origin of this feature is found in the surface mediated indirect transitions related to the direct transition in the L direction. From the AERPY experiments, the adlayer standing-wave-like bulk plasmon mode is clearly observed in Ag(100) and Ag(111) thin films. The silver multipole plasmon is observed both on Ag adlayers and bulk single crystal surfaces at 3.7 eV. No signature of the multipole plasmon is observed around 6.7 eV, in disagreement with the prediction of the s-d polarization model.
External Publication Status:published
Document Type:Article
Communicated by:Gerard Meijer
Affiliations:Fritz-Haber-Institut/Molecular Physics
External Affiliations:Inter University Consortium for Department of Atomic Energy Facilities, Khandwa Road, Indore, 452017 Madhya Pradesh, India
Identifiers:URL:http://scitation.aip.org/getabs/servlet/GetabsServ...
DOI:10.1103/PhysRevB.69.045413
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