Divacancy in 4H-SiC

Electron paramagnetic resonance and ab initio supercell calculations suggest that the P6/P7 centers, which were previously assigned to the photoexcited triplet states of the carbon vacancy-antisite pairs in the double positive charge state, are related to the triplet ground states of the neutral div...

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Veröffentlicht in:Physical review letters 2006-02, Vol.96 (5), p.055501-055501, Article 055501
Hauptverfasser: Son, N T, Carlsson, P, ul Hassan, J, Janzén, E, Umeda, T, Isoya, J, Gali, A, Bockstedte, M, Morishita, N, Ohshima, T, Itoh, H
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Sprache:eng
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Zusammenfassung:Electron paramagnetic resonance and ab initio supercell calculations suggest that the P6/P7 centers, which were previously assigned to the photoexcited triplet states of the carbon vacancy-antisite pairs in the double positive charge state, are related to the triplet ground states of the neutral divacancy. The spin density is found to be located mainly on three nearest C neighbors of the silicon vacancy, whereas it is negligible on the nearest Si neighbors of the carbon vacancy.
ISSN:0031-9007
1079-7114
1079-7114
DOI:10.1103/PhysRevLett.96.055501