Electronic structure of ordered Cs and K overlayers on graphite: Direct observation of complete charge transfer
1986; Elsevier BV; Volume: 57; Issue: 7 Linguagem: Inglês
10.1016/0038-1098(86)90628-9
ISSN1879-2766
AutoresM.T. Johnson, H. I. Starnberg, H. P. Hughes,
Tópico(s)Advancements in Battery Materials
ResumoTo elucidate further the electronic changes occurring during the initial stages of intercalation, we have made the first studies of ordered Cs and K overlayers on single crystal graphite using angle-resolved ultraviolet photoelectron spectroscopy (ARUPS). In this Communication, we clearly demonstrate that in the case of a (2 × 2)R0° overlayer of Cs or K, the outer alkali metal s electron is completely transferred to the graphite π∗-conduction bands. We find no evidence for alkali-like s states at the Fermi level.
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