Dynamics and Its Control in Modulation-Doped Heterostructures  

作　　者：李国辉 周世平 徐得名 

机构地区：[1]School of Communication and Information Engineering, Shanghai University [2]Department of Physics, College of Sciences, Shanghai University

出　　处：《Journal of Shanghai University(English Edition)》2003年第1期68-72,共5页上海大学学报（英文版）

基　　金：theNationalNaturalScienceFoundationofChina(GrantNo .698710 16)

摘　　要：A simulation model and the dynamics of the forced modulation doped heterostructure, which operates in the state far from thermodynamic equilibrium, are discussed. The numerical simulations clearly reveal that the system under an appropriate bias including DC and AC voltages exhibits expected complex dynamical behaviors. The amplitude and frequency of the externally applied microwave field are taken as the control parameters in the system. Because many nonlinear dynamical systems may have more than one possible time asympotic final state depending on the different initial conditions, the basins of attractions of both ordinary attractor and chaotic attractor are also studied respecively. Finally, as a possible application a method based on pulse driving to control chaos in semiconductor is proposed.A simulation model and the dynamics of the forced modulation doped heterostructure, which operates in the state far from thermodynamic equilibrium, are discussed. The numerical simulations clearly reveal that the system under an appropriate bias including DC and AC voltages exhibits expected complex dynamical behaviors. The amplitude and frequency of the externally applied microwave field are taken as the control parameters in the system. Because many nonlinear dynamical systems may have more than one possible time asympotic final state depending on the different initial conditions, the basins of attractions of both ordinary attractor and chaotic attractor are also studied respecively. Finally, as a possible application a method based on pulse driving to control chaos in semiconductor is proposed.

关 键 词：CHAOS QUASIPERIODICITY negative differential conductivity(NDC) heterostructure. 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]