Influence of an Intense Electromagnetic Wave on Magnetoconductivity and Hall Coefficient in Compositional Semiconductor Superlattices: Optical Phonon Interaction
We theoretically study the influence of an intense electromagnetic wave (EMW) on the Hall effect in compositional semiconductor superlattices (CSSLs) with a periodical superlattice potential in the z direction, subjected to a crossed dc electric field E = (E1,0,0) and magnetic field B = (0, 0, B). By considering the electron-optical phonon interaction at high temperature, we obtain analytical expressions for the magnetoconductivity (MC) and the Hall coefficient (HC) with a dependence on external fields, the temperature of the system, and char acteristic parameters of the CSSL. These expressions are fairly different in comparison to those obtained for bulk semiconductors. The influence of the EMW is interpreted by using the dependencies of the MC and the HC on the amplitude and the frequency of the EMW. The analytical results are computationally evaluated for GaAs/AlGaAs CSSL. The optically detected magnetophonon resonance conditions are obtained. The HC reaches saturation when the magnetic field or the EMW frequency increases.
B.D.Hoi H.V.Ngoc N.Q.Bau
Department of Physics, College of Natural Science, Vietnam National University, Hanoi, Vietnam;Depar Department of Physics, College of Natural Science, Vietnam National University, Hanoi, Vietnam
国际会议
Progress in Electromagnetics Research Symposium 2014(2014年电磁学研究新进展学术研讨会)
广州
英文
1256-1260
2014-08-01（万方平台首次上网日期，不代表论文的发表时间）