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Title

Quantum well and resonance-band split off in a K monolayer on Cu(111)

AuthorsSchiller, Frederik CSIC ORCID; Corso, Martina CSIC ORCID ; Urdanpilleta, Marta; Ohta, T.; Bostwick, A.; McChesney, J. L.; Rotenberg, E.; Ortega, J. Enrique CSIC ORCID
KeywordsAdsorbed layers
Adsorption
Copper
Fermi level
Metallic thin films
Monolayers
Potassium
Quantum wells
Surface states
Issue Date25-Apr-2008
PublisherAmerican Physical Society
CitationPhysical Review B 77, 153410 (2008).
AbstractThe potassium monolayer on Cu(111) defines the simplest metallic quantum well that confines a single s-like discrete level. The analysis of the metallization onset in such a K adlayer reveals, however, a subtle electronic structure. The metallic monolayer condensate is actually characterized by a pair of two-dimensional states that lie below the Fermi energy, namely, a quantum well state and a resonant band reminiscent of the Cu(111) surface state. All quantum well states, resonances, and Cu substrate bulk bands exhibit smooth K coverage dependence, suggesting that changes in the crystal potential upon K adsorption extend from the surface and/or interface inside the Cu substrate.
Description4 pp.-- PACS: 73.20.-r, 73.21.-b, 79.60.Dp.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevB.77.153410
URIhttp://hdl.handle.net/10261/7316
DOI10.1103/PhysRevB.77.153410
ISSN1098-0121
Appears in Collections:(CFM) Artículos




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