Details

Autor(en) / Beteiligte

• Wells, B.O.
• Shen, Z.
• Dessau, D.S.
• Spicer, W.E.
• Olson, C.G.
• Mitzi, D.B.
• Kapitulnik, A.
• List, R.S.
• Arko, A.

Titel

Angle - resolved - photoemission study of Bi sub 2 Sr sub 2 CaCu sub 2 O sub 8+. delta. : Metallicity of the Bi-O plane

Ist Teil von

• Physical review letters, 1990-12, Vol.65:24

Ort / Verlag

United States

Erscheinungsjahr

1990

Quelle

PROLA

Beschreibungen/Notizen

• We have performed high-resolution angle-resolved-photoemission experiments on Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} single crystals with different annealing histories. By depositing a small amount of Au on the surface, we were able to distinguish electronic states associated with the Bi-O surface layer. We found that the Bi-O atomic surface layer is metallic and superconducting for samples that were high-temperature annealed in oxygen but not for as-grown samples. The Cu-O plane is found to be superconducting in all samples.