Negative nonlinear damping of a multilayer graphene mechanical resonator

Journal article (2016)

Authors

V. Singh QN/Mol. Electronics & Devices , Indian Institute of Science
O. Shevchuk QN/Blanter Group - AS
Y.M. Blanter QN/Blanter Group - AS
G.A. Steele QN/Steele Lab - AS
Research Group
QN/Blanter Group (AS) (TU Delft)
Copyright: © 2016 V. Singh, O. Shevchuk, Y.M. Blanter, G.A. Steele
DOI: https://doi.org/10.1103/PhysRevB.93.245407
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Published Date

09-06-2016

Language

English

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Faculty

Applied Sciences

Department

QN/Quantum Nanoscience

Research Group

QN/Blanter Group

Abstract

We experimentally investigate the nonlinear response of a multilayer graphene resonator using a superconducting microwave cavity to detect its motion. The radiation pressure force is used to drive the mechanical resonator in an optomechanically induced transparency configuration. By varying the amplitudes of drive and probe tones, the mechanical resonator can be brought into a nonlinear limit. Using the calibration of the optomechanical coupling, we quantify the mechanical Duffing nonlinearity. By increasing the drive force, we observe a decrease in the mechanical dissipation rate at large amplitudes, suggesting a negative nonlinear damping mechanism in the graphene resonator. Increasing the optomechanical backaction further, we observe instabilities in the mechanical response.