Photoemission study of the Bi2CaSr2Cu2O8 superconductor with Cu, Ag and Au overlayers
Författare
Summary, in English
In this paper, we present a photoemission study of the interaction of Cu, Ag and Au with clean single-crystal Bi2CaSr2Cu2O8 superconductor surfaces. Both the valence-band and the Bi 5d, O 1s and Sr 3d core levels were monitored for all overlayers. Cu, Ag and Au were deposited as consecutively thicker layers starting with a third of a monolayer and progressing in steps up to a deposition in the range of eight monolayers. Comparing the results for the different overlayers reveals the Ag overlayers to be less reactive than Au which causes the formation of metallic Bi on cleaved Bi2CaSr2Cu2O8 surface. Cu is shown to be the most reactive of the three metals. The Au and Ag overlayers display an island-growth mode, while Cu grows in a layer-by-layer fashion.
Avdelning/ar
Publiceringsår
1993-12-01
Språk
Engelska
Sidor
103-108
Publikation/Tidskrift/Serie
Physica C: Superconductivity and its Applications
Volym
218
Issue
1-2
Dokumenttyp
Artikel i tidskrift
Förlag
Elsevier
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 0921-4534