Published June 1, 1988
| Version v1
Journal article
Electronic structure changes and superconductivity in YBa2Cu3O7√/sub x/
- 1. School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455
Description
X-ray photoelectron spectroscopy (XPS) studies were performed on bulk polycrystalline samples of YBa2Cu3O7√/sub x/ as a function of temperature through the superconducting transition. With decreasing temperature clear changes were observed in the photoelectron spectrum which can be interpreted as signatures of the Cu3+ and perhaps the Cu1+ oxidation states in addition to the usual Cu2+ state. These changes were not observed in samples which had been rendered nonsuperconducting by baking in vacuum. These results may have implications for the mechanism for superconductivity in this high-T/sub c/ compound
Additional details
Publishing Information
- Journal Title
- Phys. Rev., B: Condens. Matter
- Journal Volume
- 37
- Journal Issue
- 16
- Series
- Phys. Rev., B: Condens. Matter.
- Journal Page Range
- 9745-9748
- ISSN
- 0163-1829
- CODEN
- PRBMD
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 19082183
- Subject category
- S36: MATERIALS SCIENCE; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- BARIUM OXIDES; CATIONS; CHARGE STATES; COPPER; COPPER OXIDES; CORRELATIONS; ELECTRONIC STRUCTURE; PHOTOELECTRON SPECTROSCOPY; SUPERCONDUCTIVITY; TEMPERATURE DEPENDENCE; X RADIATION; YTTRIUM OXIDES
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; CHALCOGENIDES; CHARGED PARTICLES; COPPER COMPOUNDS; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; ELECTROMAGNETIC RADIATION; ELECTRON SPECTROSCOPY; ELEMENTS; IONIZING RADIATIONS; IONS; METALS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RADIATIONS; SPECTROSCOPY; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS; YTTRIUM COMPOUNDS