Affiliation:
1. Linköping University
2. University of Tsukuba
3. Hungarian Academy of Sciences
4. Universität Erlangen-Nürnberg
5. Norstel AB
6. Japan Atomic Energy Agency
7. QST
Abstract
Electron paramagnetic resonance (EPR) studies of the P6/P7 centers in 4H- and 6H-SiC
are reported. The obtained principal values of the hyperfine tensors of C and Si neighbors are in
good agreement with the values of the neutral divacancy (VCVSi
0) calculated by ab initio supercell
calculations. The results suggest that the P6/P7 centers, which were previously assigned to the
photo-excited triplet states of the carbon vacancy-carbon antisite pairs in the double positive charge
state (VCCSi
2+), are related to the triplet ground states of the C3v/C1h configurations of VCVSi
0.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
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