Core excitons and vibronic coupling in diamond and graphite
Journal Article
·
· Physical Review Letters; (United States)
- Department of Physics, University of Washington, Seattle, Washington 98195 (United States)
- Department of Physics, Uppsala University, Uppsala (Sweden)
The C 1[ital s] exciton in diamond is studied by soft x-ray emission excited with high resolution monochromatic photons. A strong phonon sideband of 5 eV wide is observed in the exciton recombination spectrum. With the phonon contribution, the exciton binding energy is estimated to be 1.5 eV. The excited atoms is suggested to undergo Jahn-Teller relaxation similar to that of the nitrogen impurities in diamond. A similar exciton is observed at the [sigma][sup *]-band threshold in graphite. These results provide new insights to the understanding of the core exciton and the donor problem in diamond and other systems.
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 5303229
- Journal Information:
- Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 71:22; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360606* -- Other Materials-- Physical Properties-- (1992-)
665100 -- Nuclear Techniques in Condensed Matter Physics -- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BINDING ENERGY
BREMSSTRAHLUNG
CARBON
CHEMICAL ANALYSIS
COUPLING
DIAMONDS
ELECTROMAGNETIC RADIATION
ELECTRON-PHONON COUPLING
ELEMENTAL MINERALS
ELEMENTS
ENERGY
EXCITONS
GRAPHITE
JAHN-TELLER EFFECT
MINERALS
NONDESTRUCTIVE ANALYSIS
NONMETALS
OPTICAL PUMPING
PUMPING
QUASI PARTICLES
RADIATIONS
RECOMBINATION
SYNCHROTRON RADIATION
X-RAY EMISSION ANALYSIS
360606* -- Other Materials-- Physical Properties-- (1992-)
665100 -- Nuclear Techniques in Condensed Matter Physics -- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BINDING ENERGY
BREMSSTRAHLUNG
CARBON
CHEMICAL ANALYSIS
COUPLING
DIAMONDS
ELECTROMAGNETIC RADIATION
ELECTRON-PHONON COUPLING
ELEMENTAL MINERALS
ELEMENTS
ENERGY
EXCITONS
GRAPHITE
JAHN-TELLER EFFECT
MINERALS
NONDESTRUCTIVE ANALYSIS
NONMETALS
OPTICAL PUMPING
PUMPING
QUASI PARTICLES
RADIATIONS
RECOMBINATION
SYNCHROTRON RADIATION
X-RAY EMISSION ANALYSIS