Calculation of the Acoustomagnetoelectric Field in a Rectangular Quantum Wire with an Infinite Potential in the Presence of an External Magnetic Field

The acoustomagnetoelectric (AME) effect in a rectangular quantum wire (RQW) with an infinite potential is investigated in the presence of an external magnetic field (EMF). The analytic expression for the AME field in a RQW with an infinite potential is calculated by using the quantum kinetic equation for the distribution function of electrons interacting with external phonons. The dependence of AME field on the acoustic wave number q, the temperature of the system T and the intensity of the external magnetic field H are obtained. The analytic expression for the AME field is numerically evaluated, plotted and discussed for the specific RQW with an infinite potential GaAs. The dependence of the AME field on the temperature of the system is significantly reduced in the low temperature region and it is approximately constant in the high temperature region. In the dependence of the AME field on the intensity of the EMF, the AME field can get the small peaks corresponding to the resonance frequency of the cyclotron-electron-acoustic phonon. The results are compared with those for normal bulk semiconductors and superlattices to show the difference.