Comparison of the isotope, pressure, and temperature shifts in the excitonic spectra of LiH and LiD crystals
Laisaar A. I., Cholakh S. O., Pustovarov V. A., Niilisk A. I., Ellervee A. F., Polienko A. N., Shcherbakov V. S.
It has been established experimentally for the first time that the isotope and temperature shifts of the excitonic levels in LiH and LiD crystals are not determined by the change in the crystal lattice spacing but instead primarily by the exciton-phonon interaction.