Theoretical study of cathode surfaces and high-temperature superconductors. Final technical report
Technical Report
·
OSTI ID:6768184
The surface-dipole properties of model cathode surfaces have been investigated with relativistic scattered-wave cluster calculations. Work-function/coverage curves have been derived from these data by employing the depolarization model of interacting surface dipoles. Accurate values have been obtained for the minimum work functions of several low-work-function surfaces. In the series BaO on bcc W, hcp Os, and fcc Pt, BaO/Os shows a lower and BaO/Pt a higher work function than BaO/W, which is attributed to the different substrate crystal structures involved. Results are also presented on the electronic structure of the high-temperature superconductor YBa2Cu3O7, which has been investigated with fully relativistic calculations for the first time.
- Research Organization:
- Analatom, Inc., Westlake, OH (United States)
- OSTI ID:
- 6768184
- Report Number(s):
- N-95-16598; NASA-CR--195407; E--9264; NAS--1.26:195407; CNN: NAS3-25085; RTOP 235-01-0A
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CATHODES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
DOCUMENT TYPES
ELECTRODES
ELECTRONIC STRUCTURE
ELEMENTS
FILMS
FUNCTIONS
HIGH-TC SUPERCONDUCTORS
METALS
OXIDES
OXYGEN COMPOUNDS
PROGRESS REPORT
SUBSTRATES
SUPERCONDUCTORS
SURFACE PROPERTIES
THIN FILMS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
WORK FUNCTIONS
YTTRIUM
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CATHODES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
DOCUMENT TYPES
ELECTRODES
ELECTRONIC STRUCTURE
ELEMENTS
FILMS
FUNCTIONS
HIGH-TC SUPERCONDUCTORS
METALS
OXIDES
OXYGEN COMPOUNDS
PROGRESS REPORT
SUBSTRATES
SUPERCONDUCTORS
SURFACE PROPERTIES
THIN FILMS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
WORK FUNCTIONS
YTTRIUM
YTTRIUM COMPOUNDS
YTTRIUM OXIDES