Published September 1, 1987
| Version v1
Journal article
Oxygen withdrawal, copper valency, and interface reaction for Fe/La/sub 1.85/Sr/sub 0.15/CuO4
- 1. Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455
Description
High-resolution x-ray photoemission spectroscopy was used to study reactive interface formation for Fe adatoms deposited onto the high-temperature superconductor La/sub 1.85/Sr/sub 0.15/CuO4. Fe deposition reduces the emission within ≅3 eV of the Fermi level, indicating disruption of the hybrid Cu 3d/sub x//sub <2/-y/sup =/--O 2p/sub x//sub ,//sub y/ states responsible for superconductivity. Strong reaction of Fe adatoms with substrate oxygen is observed for coverages ranging from 0.25 to 8 A, and oxygen is withdrawn to form Fe-O. The chemical states of Cu are selectively changed with a quenching of the Cu/sup 2+/ configuration but the persistence of the Cu/sup 1+/ configuration
Additional details
Publishing Information
- Journal Title
- Phys. Rev., B: Condens. Matter
- Journal Volume
- 36
- Journal Issue
- 7
- Series
- Phys. Rev., B: Condens. Matter.
- Journal Page Range
- 3979-3982
- ISSN
- 0163-1829
- CODEN
- PRBMD
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 19008042
- Subject category
- S36: MATERIALS SCIENCE; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- ADSORPTION; COPPER OXIDES; DEPOSITION; INTERFACES; IRON; LANTHANUM OXIDES; PHOTOELECTRON SPECTROSCOPY; STRONTIUM OXIDES; SUPERCONDUCTORS; VALENCE; X RADIATION
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; ELECTROMAGNETIC RADIATION; ELECTRON SPECTROSCOPY; ELEMENTS; IONIZING RADIATIONS; LANTHANUM COMPOUNDS; METALS; OXIDES; OXYGEN COMPOUNDS; RADIATIONS; RARE EARTH COMPOUNDS; SPECTROSCOPY; STRONTIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS