High Energy Local Vibrational Modes of Carbon Aggregates in SiC: Experimental and Theoretical Insight
We observe new photoluminescence centers in electron-irradiated 6H-SiC with phonon replicas up to 250 meV and clear threefold isotope splitting of the highest energy mode. Based on ab initio calculations, we discuss the tri-carbon anti-site (C3)Si and the di-interstitial (C2)Hex as models for these centers.
Robert P. Devaty, David J. Larkin and Stephen E. Saddow
A. Mattausch et al., "High Energy Local Vibrational Modes of Carbon Aggregates in SiC: Experimental and Theoretical Insight", Materials Science Forum, Vols. 527-529, pp. 465-468, 2006