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arXiv · 1604.06179

Piezoelectric electromechanical coupling in nanomechanical resonators with two-dimensional electron gas

A. A. Shevyrin·A. G. Pogosov·A. K. Bakarov·A. A. Shklyaev
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Abstract

The electrical response of two-dimensional electron gas to vibrations of a nanomechanical cantilever containing it is studied. Vibrations of perpendicularly oriented cantilevers are experimentally shown to change oppositely the conductivity near their bases. This indicates the piezoelectric nature of electromechanical coupling. A physical model is developed, which quantitatively explains the experiment. It shows that the main origin of the conductivity change is a rapid change in the mechanical stress on the boundary between suspended and non-suspended areas, rather than the stress itself.

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A. A. Shevyrin, A. G. Pogosov, A. K. Bakarov, A. A. Shklyaev. 2016-04-21. Piezoelectric electromechanical coupling in nanomechanical resonators with two-dimensional electron gas. https://doi.org/10.1103/physrevlett.117.017702

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