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arXiv · 0708.2700

On the Enormous Effect of Electric Field on the Crystalline Lattice of the Conductors with Charge-Density Waves

V. Ya. Pokrovskii
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Abstract

We discuss deformation of quasi 1-dimensional conductors with charge-density wave (CDW) under the electric field deforming the CDW. In case of ``strong'' CDW-lattice interaction the effect can be treated in terms of the converse piezoelectric effect with enormous piezomodulus, $\sim L_c/λ$ times larger than that in ionic crystals ($λ$ is the CDW wavelength, $L_c$ is the CDW coherence length, mm scale in the sliding state). The CDW-lattice interaction is likely to be defined by the interband charge transfer (rearrangement of the covalent bonds) with lattice deformation, possible in a number of CDW compounds. The resulting effects, observed or expected, are paving a way towards new-principle actuators, including nanosized ones.

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V. Ya. Pokrovskii. 2007-08-20. On the Enormous Effect of Electric Field on the Crystalline Lattice of the Conductors with Charge-Density Waves. https://doi.org/10.1134/s0021364007160096

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