Current-voltage behavior of silicon containing nanoclusters of manganese atoms

Using current-voltage measurements at varied temperature, incident light intensity, and illumination wavelength, we have determined the energy level spectrum of a multiply charged cluster of manganese atoms in silicon. The results demonstrate that such clusters produce a whole spectrum of energy levels in the interval Δ E = 0.2–0.46 eV from the valence band top. The energy levels in this interval are distributed exponentially.