Degeneracy of rotational viscosities at the chiral smectic C-smectic A transition in DOBAMBC

Abstract

From measurements of the electroclinic effect and the dielectric strength of the soft mode close to the chiral smectic C-smectic A transition we show that the rotational viscosities associated with the Goldstone and soft modes are degenerate at T_c , in agreement with the predictions of the theoretical model.