Equivalent muonium hydrogen states in silicon

Experimental investigation results for hydrogenic states with anisotropic superfine structure formed in silicon monocrystals at high-energy muon and proton implantation, are given. It is shown that state properties of (Mu*) anomalous muonium and Si-AA9 hydrogen-containing centre studied using muon spin rotation (μSR) and electron paramagnetic resonance (EPR) in silicon with regard to isotropic effect are similar. It enables to make suggestion about presence of two equivalent structures in silicon, that is, Mu* and Si-AA9, which differ by mass of hydrogenic atom belonging to centre composition. Semiempirical cluster calculations of centre electron structure at hydrogen (muonium) localization in lattice different interstitials are conducted with calculation of parameters of superfine interaction and electron g-tensor of the impurity atom. Most probable configuration of Mu* and Si-AA9 complexes and their charge state are determined