Negative nonlinear damping of a multilayer graphene mechanical resonator

被引:35
|
作者
Singh, Vibhor [1 ,2 ]
Shevchuk, Olga [1 ]
Blanter, Ya. M. [1 ]
Steele, Gary A. [1 ]
机构
[1] Delft Univ Technol, Dept Quantum Nanosci, Kavli Inst Nanosci, Lorentzweg 1, NL-2628 CJ Delft, Netherlands
[2] Indian Inst Sci, Dept Phys, Bangalore 560012, Karnataka, India
关键词
NANOELECTROMECHANICAL SYSTEMS; ELECTRICAL READOUT; OSCILLATORS; FREQUENCY; GLASSES; MOTION;
D O I
10.1103/PhysRevB.93.245407
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
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.
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页数:5
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