Interface formation of semiconductors with high-T/sub c/ superconductors: Ge/La/sub 1. 85/Sr/sub 0. 15/CuO/sub 4/
Journal Article
·
· Phys. Rev. B: Condens. Matter; (United States)
Inverse photoemission has been used to probe the microscopic evolution of the semiconductor/superconductor interface Ge/La/sub 1.85/Sr/sub 0.15/CuO/sub 4/. We find little or no reaction until the Ge coverage reaches 1 A and that the reaction is quickly saturated when the nominal coverage reaches approx.6 A. The reaction is characterized by the reduction of the Cu 3d--O 2p antibonding electronic states straddling the Fermi level and the shift of La 4f and 5d empty-state features toward E/sub F/. Large apparent electron mean free paths deduced from the attenuation of La peaks suggest cluster and island formation in the Ge/La/sub 1.85/Sr/sub 0.15/CuO/sub 4/ interface.
- Research Organization:
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455
- OSTI ID:
- 5619623
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 37:1; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
Similar Records
Cu-induced surface disruption of La/sub 1. 85/Sr/sub 0. 15/CuO/sub 4/
Inverse photoemission studies of the empty electronic states and surface stability of La/sub 1. 85/Sr/sub 0. 15/CuO/sub 4/
Titanium-oxygen reaction at the Ti/La/sub 1. 85/Sr/sub 0. 15/CuO/sub 4/ interface
Journal Article
·
Thu Dec 31 23:00:00 EST 1987
· Phys. Rev. B: Condens. Matter; (United States)
·
OSTI ID:5741288
Inverse photoemission studies of the empty electronic states and surface stability of La/sub 1. 85/Sr/sub 0. 15/CuO/sub 4/
Journal Article
·
Tue Sep 01 00:00:00 EDT 1987
· Phys. Rev. B: Condens. Matter; (United States)
·
OSTI ID:6254721
Titanium-oxygen reaction at the Ti/La/sub 1. 85/Sr/sub 0. 15/CuO/sub 4/ interface
Journal Article
·
Sun Nov 22 23:00:00 EST 1987
· Appl. Phys. Lett.; (United States)
·
OSTI ID:6089926
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
BREMSSTRAHLUNG
CHALCOGENIDES
COATINGS
COPPER COMPOUNDS
COPPER OXIDES
DEPOSITION
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
ELECTRONIC STRUCTURE
ELECTRONS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY LEVELS
FERMI LEVEL
FERMIONS
GERMANIUM
INTERFACES
IONIZING RADIATIONS
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
LEPTONS
MATERIALS
MEAN FREE PATH
METALS
OXIDES
OXYGEN COMPOUNDS
PHOTOELECTRON SPECTROSCOPY
RADIATIONS
RARE EARTH COMPOUNDS
SEMICONDUCTOR MATERIALS
SPECTROSCOPY
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
ULTRAVIOLET RADIATION
VAPOR DEPOSITED COATINGS
X RADIATION
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BREMSSTRAHLUNG
CHALCOGENIDES
COATINGS
COPPER COMPOUNDS
COPPER OXIDES
DEPOSITION
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
ELECTRONIC STRUCTURE
ELECTRONS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY LEVELS
FERMI LEVEL
FERMIONS
GERMANIUM
INTERFACES
IONIZING RADIATIONS
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
LEPTONS
MATERIALS
MEAN FREE PATH
METALS
OXIDES
OXYGEN COMPOUNDS
PHOTOELECTRON SPECTROSCOPY
RADIATIONS
RARE EARTH COMPOUNDS
SEMICONDUCTOR MATERIALS
SPECTROSCOPY
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
ULTRAVIOLET RADIATION
VAPOR DEPOSITED COATINGS
X RADIATION