Nonlinear dynamics in a terahertz-driven double-layer graphene diode  

作　　者：Wei Feng Lijuan Shi 

机构地区：[1]Department of Physics, Jiangsu University

出　　处：《Journal of Semiconductors》2018年第12期127-130,共4页半导体学报（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(No.11604126),the National Natural Science Foundation of China(No.61601205);the Basic Research Program of Jiangsu Province(Natural Science Foundation for Young Scholars)(No.BK20160541);the Natural Science Foundation of the Jiangsu Higher Education Institutions of China(No.16KJB140003)

摘　　要：By using the time-dependent hydrodynamic equations, we carry out a theoretical study of nonlinear dynamics in an n+nn+ double-layer graphene diode driven by terahertz radia-tion. A cooperative nonlinear oscillatory mode shows up due to the negative differential conductance effect. We use different chaos-detecting methods,such as the Poincare bifurcation diagram and the first return map, to examine the transitions between the periodic and chaotic states. The double-layer graphene diode shows typical nonlinear dynamical behavior with the DC bias,AC amplitudes and the AC frequency as the control parameters.By using the time-dependent hydrodynamic equations, we carry out a theoretical study of nonlinear dynamics in an n+nn+ double-layer graphene diode driven by terahertz radia-tion. A cooperative nonlinear oscillatory mode shows up due to the negative differential conductance effect. We use different chaos-detecting methods,such as the Poincare bifurcation diagram and the first return map, to examine the transitions between the periodic and chaotic states. The double-layer graphene diode shows typical nonlinear dynamical behavior with the DC bias,AC amplitudes and the AC frequency as the control parameters.

关 键 词：NONLINEAR TERAHERTZ double-layer graphene 

分 类 号：TN[电子电信]