Electric Field Dependence of Elastic Properties of TaS3

We have measured the electric field dependence of the Young's modulus and internal friction of orthorhombic Ta${\mathrm{S}}_3$. The modulus is observed to decrease by a few percent when the field exceeds ${\epsilon }_T$, the threshold for non-Ohmic conduction. At the same field, the internal friction increases rapidly, saturating at ∼ 1% for fields $\epsilon >2\mathrm{}{\epsilon }_T$.