Nonlinear damping in graphene resonators

被引：79
|
作者：
Croy, Alexander [1 ]
Midtvedt, Daniel [1 ]
Isacsson, Andreas [1 ]
Kinaret, Jari M. [1 ]
机构：
[1] Chalmers Univ Technol, Dept Appl Phys, S-41296 Gothenburg, Sweden
来源：
PHYSICAL REVIEW B | 2012年 / 86卷 / 23期
基金：
瑞典研究理事会;
关键词：
D O I：
10.1103/PhysRevB.86.235435
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Based on a continuum mechanical model for single-layer graphene, we propose and analyze a microscopic mechanism for dissipation in nanoelectromechanical graphene resonators. We find that coupling between flexural modes and in-plane phonons leads to linear and nonlinear damping of out-of-plane vibrations. By tuning external parameters such as bias and ac voltages, one can cross over from a linear-to a nonlinear-damping dominated regime. We discuss the behavior of the effective quality factor in this context. DOI: 10.1103/PhysRevB.86.235435
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页数：9
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