Phonon-induced transitions between exciton subbands in silicon
Zinov'ev N. N. , Kovalev D. I., Yaroshetskii I. D., Blank A. Yu.
A resonant absorption of nonequilibrium acoustic phonons on transitions between exciton subbands has been observed. The threshold kinetic energy of the excitons has been found to be E% = 0.1 meV.