AI Article Synopsis
- The study explores how a two-dimensional electron gas reacts to vibrations in a nanomechanical cantilever.
- Experimental results show that vibrations in different orientations affect conductivity near the cantilever's base in opposite ways, implying a piezoelectric effect in the coupling.
- A developed model reveals that the key factor in conductivity changes is the quick variation in mechanical stress at the suspended-nonsuspended boundary, not the stress level itself.
Article Abstract
The electrical response of a two-dimensional electron gas to vibrations of a nanomechanical cantilever containing it is studied. Vibrations of perpendicularly oriented cantilevers are experimentally shown to oppositely change 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 nonsuspended areas, rather than the stress itself.
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| http://dx.doi.org/10.1103/PhysRevLett.117.017702 | DOI Listing |
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