Abstract
The Liouville equation is considered for the density operator of a triplet center with phenomenological population and decay constants (K+ and K-). In the case of anisotropy of K- with respect to the internal magnetic axis of the triplet, the spin polarization and intensities of the EPR lines of the triplet center in a strong magnetic field are calculated. On this basis, an interpretation of experiments on Si-Si centers in irradiated silicon is given. Quantum-chemical calculations of the model of the center in the form of a cluster OSi4H12 are performed, taking account of the spin-orbital interaction, the anisotropy of which agrees with the EPR spectra of Si-Si centers in silicon.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 6, pp. 97–101, June, 1989.
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Serebrennikov, Y.A., Minaev, B.F. Nonequilibrium polarization of triplet centers in silicon. Soviet Physics Journal 32, 490–492 (1989). https://doi.org/10.1007/BF00898640
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DOI: https://doi.org/10.1007/BF00898640