Electronic correlations in YBa/sub 2/Cu/sub 3/O/sub 7-//sub delta/ from Auger spectroscopy

Journal Article · Tue Dec 01 00:00:00 EST 1987 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.36.8285· OSTI ID:5741190

Balzarotti, A; De Crescenzi, M; Giovannella, C; Messi, R; Motta, N; Patella, F; Sgarlata, A

Cu L/sub 3/VV Auger spectra of the superconducting compound YBa/sub 2/Cu/sub 3/O/sub 7-//sub delta/ have been measured above and below the critical temperature T/sub c/ = 90 K and compared with those of CuO. In the superconductor a localized peak whose intensity increases with temperature is found. Such a structure, lacking in copper oxide, is attributed to electronic correlations in the Cu 3d/sup 8/ configuration.

• Research Organization: Dipartimento di Fisica, Universita-grave-accent di Roma II, Via O. Raimondo, I-00173 Roma, Italy
• OSTI ID: 5741190
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Vol. 36:16
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BARIUM OXIDES
AUGER EFFECT
ELECTRON CORRELATION
COPPER OXIDES
YTTRIUM OXIDES
LOW TEMPERATURE
SUPERCONDUCTORS
TEMPERATURE EFFECTS
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
CORRELATIONS
OXIDES
OXYGEN COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties
656100 - Condensed Matter Physics- Superconductivity