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Bulgarian Journal of Physics
Print: 1310-0157 Online: 1314-2666
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RECOGNIZED BY THE EUROPEAN PHYSICAL SOCIETY 
Bulg. J. Phys. vol.23 no.3-4 (1996), pp. 162-169
The Oxygen Vacancies — Pseudo-Jahn-Teller Defect Centers in Quartz
M. Georgiev, A. Manov
G. Nadjakov Institute of Solid State Physics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee Blvd., 1784 Sofia, Bulgaria
go backG. Nadjakov Institute of Solid State Physics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee Blvd., 1784 Sofia, Bulgaria
Abstract. The pseudo-Jahn-Teller effect was applied for the description of the E'2, E'4 defect centers as well as for H- ion at E'4 defect center in alpha-quartz. The idea for the application of the pseudo-Jahn-Teller effect to defect centers' description is supported by new results. The physical essence of the pseudo-Jahn-Teller effect makes possible, in a natural way, the introduction of the characteristic large relaxations and charge transfers pertinent to the E'-defect centers. Considerations presented in this paper allow to conclude that the pseudo-Jahn-Teller effect leads to the establishment of E'-defect centers stable state.