Experimental investigation of the density of states of a quasi-one-dimensional vibrational exciton is isotopically mixed KN03 crystals
Belousov M. V. , Pogarev D. E.
The possibility of directly measuring the density of states of a disordered crystal from the spectrum of compound transitions is noted and studied experimentally for the first time. The unusual behavior of the spectrum studied as a function of concentration is explained by the quasi-one-dimensional nature of the band.