The Influence of the Electromagnetic Wave on the Nonlinear Quantum Acoustoelectric Current in a Quantum Well

摘要：

　　The influence of the electromagnetic wave on the nonlinear quantum acoustoelectric(QAE)current in a quantum well(QW)is investigated for an acoustic wave whose wavelength λ=2π/q is smaller than the mean free path l of the electrons and in the region ql(>)1(where q is the acoustic wave number).The dependence of the QAE current jQAE on the frequency of external acoustic wave ωq,the temperature T,the amplitude E0 and frequency-of the electromagnetic wave are obtained by using the quantum kinetic equation in the case of relaxation time of momentum(τ)constant approximation.Numerical calculation is done,and the result is discussed for a typical AlGaAs/GaAs/AlGaAs QW.The computational results show that the dependence of the QAE current jQAE on the external acoustic wave frequency ωq,the frequency of electromagnetic wave Ω and the QWs width L is non-monotonic,the cause of appearance peaks attributes the transition between mini-bands n →(n).The quantum theory of the QAE current in a QW is newly developed.

作者: N.V.Hieu N.Q.Bau N.V.Nghia

作者单位: Faculty of Physics,Hanoi University of Science,Vietnam National University,Hanoi,Vietnam;Faculty of Faculty of Physics,Hanoi University of Science,Vietnam National University,Hanoi,Vietnam

会议类型: 国际会议

会议名称: Progress in Electromagnetics Research Symposium 2013(2013年电磁学研究新进展学术研讨会)

会议地点: 台北

会议语种:英文

页码: 541-547

在线出版日期: 2013-03-01（万方平台首次上网日期，不代表论文的发表时间）