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Solitons in the system of interacting Frenkel excitons
(Journal of Physics: Condensed Matter, 2000)
The possible formation of solitons in a Frenkel exciton system, with exciton-exciton interaction only, is studied taking into account the Pauli character of exciton operators. This is realized by choosing the trial function ...
Raman spectroscopy of impurity states in gallium-doped PbTe
(Journal of Physics: Condensed Matter, 2000)
We present Raman spectra and results of galvanomagnetic measurements of PbTe single crystals, doped with gallium, between 10 and 300 K. The effect of persistent photoconductivity depends on the gallium concentration. In ...