The dependence of an acoustomagnetoelectic field on the temperature in a cylindrical quantum wire ALGaAs/GaAs

Tóm tắt

The acoustomagnetoelectric (AME) field in a cylindrical quantum wire with an infinite potential (CQWIP) is investigated theoretically in the presence of an external magnetic field (EMF) by using the quantum kinetic equation method. We obtain the quantum kinetic equation for the distribution function of electrons interacting with internal and external acoustic phonons. We calculate the AME current in a CQWIP and then receive analytical expressions for the AME field in the CQWIP in the presence of the EMF. Theoretical results for the AME field is numerically evaluated, plotted and discussed for the specific CQWIP AlGaAs/GaAs. The result shows that the dependence of the AME field on the temperature of the system is nonlinear. These results are compared with those of normal bulk semiconductors and quantum well to show the difference.