Inverse photoemission studies of the high-T/sub c/ superconductors

Journal Article · Mon Feb 29 23:00:00 EST 1988 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.37.3738· OSTI ID:5357005

Viescas, A J; Tranquada, J M; Moodenbaugh, A R; Johnson, P D

We present inverse photoemission spectra recorded from the high-T/sub c/ superconductors La/sub 1.85/Sr/sub 0.15/CuO/sub 4/ and YBa/sub 2/Cu/sub 3/O/sub 7/ and the related compound CuO. We are able to identify the various unoccupied orbitals associated with the La, Y, and Ba sites. For the YBa/sub 2/Cu/sub 3/O/sub 7/ compound we observe the unoccupied O 2p holes above the Fermi level but do not observe the equivalent holes in the La compound. The inverse photoemission spectrum from CuO shows no pronounced structure

• Research Organization: Department of Physics, Brookhaven National Laboratory, Upton, New York 11973
• OSTI ID: 5357005
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 37:7; 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
BARIUM COMPOUNDS
BARIUM OXIDES
BREMSSTRAHLUNG
CHALCOGENIDES
COMPARATIVE EVALUATIONS
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
ELECTROMAGNETIC RADIATION
ELECTRONIC STRUCTURE
EMISSION
ENERGY LEVELS
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
OXIDES
OXYGEN COMPOUNDS
PHOTOEMISSION
POINT DEFECTS
RADIATIONS
RARE EARTH COMPOUNDS
SECONDARY EMISSION
SPECTRA
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
VACANCIES
YTTRIUM COMPOUNDS
YTTRIUM OXIDES