Sources of nonlinearity in the response of a driven nano-electromechanical resonator

• URL: http://arxiv.org/abs/2509.12830v1
• Date: Tue, 16 Sep 2025 08:55:35 GMT
• Title: Sources of nonlinearity in the response of a driven nano-electromechanical resonator
• Authors: Sofia Sevitz, Kushagra Aggarwal, Jorge Tabanera-Bravo, Juliette Monsel, Florian Vigneau, Federico Fedele, Joe Dunlop, Juan M. R. Parrondo, Gerard J. Milburn, Janet Anders, Natalia Ares, Federico Cerisola,
• Abstract summary: We study the interplay between the electromechanical coupling and the resonator that induce a Duffing-like nonlinear behavior.<n>The main nonlinear feature we observe is the emergence of arch-like resonances in the electronic transport when the resonator is strongly driven.<n>This characterization paves the way for the exploration of nonlinear phenomena using mesoscopic electromechanical resonators.
• Score: 0.07437459197111806
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Nanoelectromechanical resonators provide an ideal platform for investigating the interplay between electron transport and nonlinear mechanical motion. Externally driven suspended carbon nanotubes, containing an electrostatically defined quantum dot are especially promising. These devices possess two main sources of nonlinearity: the electromechanical coupling and the intrinsic contributions of the resonator that induce a Duffing-like nonlinear behavior. In this work, we observe the interplay between the two sources across different driving regimes. The main nonlinear feature we observe is the emergence of arch-like resonances in the electronic transport when the resonator is strongly driven. We show that our model is in good agreement with our experimental electron transport measurements on a suspended carbon nanotube. This characterization paves the way for the exploration of nonlinear phenomena using mesoscopic electromechanical resonators.

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