Manifestation of mixed vibronic states in the far infrared spectra of TEA(TCNQ)2 and their contribution to the dielectric constant
Vainrub A.M., Vlasova R.M., Semkin V.N.
The reflection band in the far IR spectra of TEA(TCNQ)2, which determines the high dielectric constant €s~70 of the crystal, is investigated and explained on the basis of allowance for the interaction between the electrons and the TCNQ molecule vibrations. It is estimated that this mechanism can account for the anomalously large dielectric constants of highly-conducting TCNQ salts.