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- 1. Appl. Phys. A 67, 209 (1998) , “Silicon vacancies in 3C-SiC observed by positron lifetime and electron spin resonance”, A. Kawasuso, H. Itoh, N. Morishita, M. Yoshikawa, T. Ohshima, I. Nashiyama, S. Okada, H. Okumura, S. YoshidaPositron lifetime and electron spin resonance (ESR) measurements were performed for 1-MeV electronirradiated cubic silicon carbide (3C-SiC). From a comparison of the annealing behaviors of positron lifetime and ESR signal, we identified the annihilation of positrons localized at single-negative silicon vacancies. The positron lifetime at silicon vacancies was first determined experimentally to be 188|±|4 ps. This value agrees well with the theoretical positron lifetime for silicon vacancies [G. Brauer et al. Phys. Rev. B 54, 2512 (1996)]. The trapping coefficient of singlenegative silicon vacancies was also derived. (Read more)
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Updated at 2010-07-20 16:50:39
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