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Continuous-wave and pulsed EPR study of the negatively charged silicon vacancy with S=3/2 and C$$_{3nu}$$ symmetry in $$n$$-type 4H-SiC

Mizuochi, Norikazu*; Yamasaki, Satoshi*; Takizawa, Haruki; Morishita, Norio; Oshima, Takeshi; Ito, Hisayoshi; Isoya, Junichi*

EPR study was performed to understand vacancy-type defects in electron-irradiated 4H-SiC. In this study, the T$$_{V2a}$$ center which was reported to be S=1 was charactrized. As a result of untation method of EPR technique, it was revealed that the multipicity of the center is not triplet (S=1) but quartet (S=3/2). From the analysis of $$^{13}$$C hyperfine interactions of nearest-neighbors, the canter was determined to be single silicon vacancy. In addition, it was found that the center is negativly charged silicon vacancy with C$$_{3nu}$$ symmetry.

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Category:Materials Science, Multidisciplinary

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