Journal
PHYSICAL REVIEW B
Volume 72, Issue 23, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.72.235208
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In this paper, we unambiguously re-determine the spin multiplicity of T-V2a by pulsed electron nucleus double resonance technique. The T-V2a center is one of the most commonly observed defects in 4H-SiC, and its origin was identified as one belonging to a class of negatively charged silicon vacancy by means of continuous-wave electron paramagnetic resonance (EPR) and the two-dimensional nutation method of pulsed EPR technique. However, a model with the spin multiplicity of triplet (S=1) and the neutral charge state has recently been suggested. Our result clearly shows that T-V2a is a quartet spin (S=3/2) state and thus should be single-negatively charged (-1).
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