Theoretical and electron paramagnetic resonance studies of hyperfine interaction in nitrogen doped 4H and 6H SiC

Journal Article · Fri Feb 21 00:00:00 EST 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4866331· OSTI ID:22278026

Trinh, X. T.; Son, N. T.; Janzén, E. ^[1]

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1. Department of Physics, Chemistry and Biology, Linköping University, SE-581 83 Linköping (Sweden)

Motivated by recent experimental findings on the hyperfine signal of nitrogen donor (N{sub C}) in 4 H and 6 H SiC, we calculate the hyperfine tensors within the framework of density functional theory. We find that there is negligible hyperfine coupling with {sup 29}Si isotopes when N{sub C} resides at h site both in 4 H and 6 H SiC. We observe measurable hyperfine coupling to a single {sup 29}Si at k site in 4 H SiC and k{sub 1} site in 6 H SiC. Our calculations unravel that such {sup 29}Si hyperfine coupling does not occur at k{sub 2} site in 6 H SiC. Our findings are well corroborated by our new electron paramagnetic resonance studies in nitrogen doped 6 H SiC.

• OSTI ID: 22278026
• Journal Information: Journal of Applied Physics, Vol. 115, Issue 7; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COUPLING
DENSITY FUNCTIONAL METHOD
DOPED MATERIALS
ELECTRON SPIN RESONANCE
HYDROGEN COMPOUNDS
HYPERFINE STRUCTURE
NITROGEN
SILICON 29
SILICON CARBIDES
TENSORS