Identification of the carbon antisite in SiC: EPR of {sup 13}C enriched crystals

Journal Article · Fri Feb 15 04:00:00 EST 2008 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PHYSREVB.77.085120· OSTI ID:21143099

Baranov, Pavel G; Ilyin, Ivan V; Soltamova, Alexandra A; Mokhov, Eugene N ^[1]

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1. Ioffe Physico-Technical Institute, St. Petersburg 194021 (Russian Federation)

An electron paramagnetic resonance spectrum with axial symmetry along c axis, spin S=1/2 and strong hyperfine interaction with one carbon atom has been observed in neutron-irradiated and annealed 6H-SiC, {sup 13}C isotope enriched. The {sup 13}C concentration was defined from hyperfine structure for the negatively charged silicon vacancy. The spectrum is identified as arising from an isolated carbon atom presumably in Si position C{sub Si}--carbon antisite. The unpaired spin is up to 43% localized in one pure p orbital that is directed along the c axis and 10% localized in three sp{sup 2} hybrid orbitals, and this means that the C atom is relaxed away from Si position.

• OSTI ID: 21143099
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 8 Vol. 77; ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANNEALING
ATOMS
AXIAL SYMMETRY
CARBON
CARBON 13
CRYSTALS
ELECTRON SPIN RESONANCE
HYBRIDIZATION
HYPERFINE STRUCTURE
INTERACTIONS
IRRADIATION
NEUTRONS
PARAMAGNETISM
SEMICONDUCTOR MATERIALS
SILICON
SILICON CARBIDES
SILICON COMPOUNDS
SPECTRA
SPIN
VACANCIES