title: Piezoelectric Electromechanical Coupling in Nanomechanical Resonators with a Two-Dimensional Electron Gas.
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.
authors.affiliation: Rzhanov Institute of Semiconductor Physics 13, Lavrentyev Avenue, Novosibirsk 630090, Russia, and Novosibirsk State University 2, Pirogov Street, Novosibirsk 630090, Russia.
authors.forename: A A
authors.initials: AA
authors.lastname: Shevyrin
authors.affiliation: Rzhanov Institute of Semiconductor Physics 13, Lavrentyev Avenue, Novosibirsk 630090, Russia, and Novosibirsk State University 2, Pirogov Street, Novosibirsk 630090, Russia.
authors.forename: A G
authors.initials: AG
authors.lastname: Pogosov
authors.affiliation: Rzhanov Institute of Semiconductor Physics 13, Lavrentyev Avenue, Novosibirsk 630090, Russia, and Novosibirsk State University 2, Pirogov Street, Novosibirsk 630090, Russia.
authors.forename: A K
authors.initials: AK
authors.lastname: Bakarov
authors.affiliation: Rzhanov Institute of Semiconductor Physics 13, Lavrentyev Avenue, Novosibirsk 630090, Russia, and Novosibirsk State University 2, Pirogov Street, Novosibirsk 630090, Russia.
authors.forename: A A
authors.initials: AA
authors.lastname: Shklyaev