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- 1. Phys. Rev. Lett. 85, 417 (2000) , “Extreme Reduction of the Spin-Orbit Splitting of the Deep Acceptor Ground State of ZnS- in Si”, H. Schroth, K. L. La?mann, S. Vo?, H. Bracht.Electric-dipole spin resonance of the deep acceptor ZnS- in Si reveals close Γ8 and Γ7 ground states with zero-field separation of only 0.31 meV as compared to the 43 meV of the two valence bands. With Landé's formula for the g factors of a 2T2 state split by spin-orbit interaction into Γ8 and Γ7 this nearness can be interpreted as strong quenching of the orbital moment. The observed dependence on the Zn isotopic mass indicates a dynamic contribution of the acceptor atom to the electronic state as is expected for a Jahn-Teller effect. (Read more)
- 2. Appl. Phys. A 30, 1 (1983) , “Transition Metals in Silicon”, E. R. Weber.A review is given on the diffusion, solubility and electrical activity of 3d transition metals in silicon. Transition elements (especially, Cr, Mn, Fe, Co, Ni, and Cu) diffuse interstitially and stay in the interstitial site in thermal equilibrium at the diffusion temperature. The parameters of the liquidus curves are identical for the Si:Ti — Si:Ni melts, indicating comparable silicon-metal interaction for all these elements. Only Cr, Mn, and Fe could be identified in undisturbed interstitial sites after quenching, the others precipitated or formed complexes. The 3d elements can be divided into two groups according to the respective enthalpy of formation of the solid solution. The distinction can arise from different charge states of these impurities at the diffusion temperature. For the interstitial 3d atoms remaining after quenching, reliable energy levels are established from the literature and compared with recent calculations. (Read more)
- 3. Sov. Phys. Semicond. 5, 1930 (1972) , “EPR of Zinc Atoms in p-Type Silicon”, V. B. Ginodman, P. S. Gladkov, B. G. Zhurkin, B. V. Kornilov.Zinc is a double accepter in silicon and it introduces two levels, E + 0.31 and E + 0.55 eV, into forbidden band [1,2]. The electrical and optical properties of zinc-doped silicon have been investigated by several workers [2-4]. A brief report of the observation of EPR in silicon is given in [5,6]: in these investigations the magnetic field H was perpendicular to the axis of compression of a crystal. Uniaxial compression gave rise to a structure in EPR spectrum of Zn67 and this structure was attributed to the hyperfine interaction of an unpaired hole with the magnetic moment of the Zn67 nucleus. The present paper describes the result of an investigation of the EPR of the Zn- state of zinc in p-type silicon doped with zinc in p-type silicon doped with zinc and phosphorus. The investigation was carried out at liquid helium temperature.
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