Tsyplenkov V.V.1, Zhukavin R.Kh.1, Shastin V.N.1
1Federal Research Center A.V. Gaponov-Grekhov Institute of Applied Physics of the Russian Academy of Sciences, Nizhny Novgorod, Russia
Email: Tsyplenkov1@yandex.ru
In this paper, we propose a method for resonant optical excitation of ortho states of two-electron donors in silicon, direct transitions to which from the ground state are extremely suppressed in case of a weak spin-orbit coupling. Excitation is proposed to be carried out using the points of anti-crossing of ortho and para states under conditions of uniaxial stress of the crystal. In these points the states cannot be unambiguously assigned to any group of states with a certain spin, as a result of which the optical transition becomes allowed. The structure of the energy levels of two-electron impurities is such that the excitation of such state almost unambiguously leads to the population of the underlying ortho-type state, which is expected to be very long-lived in the case of weak spin-orbit coupling. In the present work, theoretical estimates of the cross sections for optical transitions in the vicinity of the level anticrossing point as a function of strain for strong and weak spin-orbit coupling are made. Keywords: doubly charged donors, para and ortho states, optical transitions, spin-orbit interaction.
- K.J. Morse, R.J.S. Abraham, A. DeAbreu, C. Bowness, T.S. Richards, H. Riemann, N.V. Abrosimov, P. Becker, H.-J. Pohl, M.L.W. Thewalt, St. Simmons. Sci. Adv., 3, e1700930 (2017)
- K. Bergman, G. Grossmann, H.G. Grimmeiss, M. Stavola. Phys. Rev. Lett., 56, 2827 (1986)
- K. Bergman, G. Grossmann, H.G. Grimmeiss, M. Stavola, C. Holm, P. Wagner. Phys. Rev. B, 37, 10738 (1988)
- H. Bethe, E. Salpiter, Kvantovaya mekhanika atomov s odnim i dvumya elektronami (M., Gos. izd-vo fiz.-mat. lit., 1960). (in Russian)
- D.K. Wilson, G. Feher. Phys. Rev., 124 (4), 1068 (1961)
- M. Steger, A. Yang, M.L.W. Thewalt, M. Cardona, H. Riemann, N.V. Abrosimov, M.F. Churbanov, A.V. Gusev, A.D. Bulanov, I.D. Kovalev, A.K. Kaliteevskii, O.N. Godisov, P. Becker, H.-J. Pohl, E.E. Haller, J.W. Ager, III. Phys. Rev. B, 80, 115204 (2009)
- S.G. Pavlov, L.M. Portsel, V.B. Shuman, A.N. Lodygin, Yu.A. Astrov, N.V. Abrosimov, S.A. Lynch, V.V. Tsyplenkov, H.-W. Hubers. Phys. Rev. Mater., 5, 114607 (2021)
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