Surface study of the 83-K superconductor Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub 8/ by low-energy electron diffraction and angle-resolved inverse photoemission spectroscopy

Journal Article · Sat Apr 01 04:00:00 EST 1989 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.39.7316· OSTI ID:6407553

Claessen, R; Manzke, R; Carstensen, H; Burandt, B; Buslaps, T; Skibowski, M; Fink, J

Low-energy-electron-diffraction (LEED) and angle-resolved inverse photoemission spectroscopy (ARIPES) have been applied to the cleaved surface of Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub 8/ single crystals. The LEED pattern shows a surface lattice which is identical to the superlattice found in the bulk structure. ARIPES along the GAMMAX(a/sup */) direction yields nondispersive unoccupied electronic states at 2.9 and /similar to/5 eV above the Fermi energy attributed to Bi-O derived conduction bands. At 0.47 GAMMAX the experimental density of states at the Fermi level increases. This may be due to the crossing of the O(1) band through E/sub F/ derived from oxygen atoms in the Cu-O planes.

• Research Organization: Institut fuer Experimentalphysik, Universitaet Kiel, D-2300 Kiel, Federal Republic of Germany
• OSTI ID: 6407553
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 39:10; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
CLEAVAGE
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL STRUCTURE
CRYSTALS
DIFFRACTION
ELECTRON DIFFRACTION
MICROSTRUCTURE
MONOCRYSTALS
OXIDES
OXYGEN COMPOUNDS
SCATTERING
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTORS
SURFACE PROPERTIES
TRANSITION ELEMENT COMPOUNDS