Conductivity tensor in rectangular quantum wire for the case of electrons-optical phonon scattering

Abstract

Conductivity tensor in a rectangular quantum wire with infinite potential is calculated in the presence of two external fields, laser field, and linearly polarized electromagnetic wave field. Conductivity tensor is calculated based on the theory of quantum kinetic equations for electrons in quantum wires. The conductivity tensor expression shows its dependence on the amplitude, frequency of the external field, and characteristic quantities for a rectangular quantum wire with infinite potential. This work also investigated and plotted the dependence of conductivity tensors to the external fields, the quantum wire studied here is the quantum wire GaAs / GaAsAl. The dependence of the conductivity tensor to the external field is nonlinear, at different frequency bands, the dependence is different. The conductivity tensor depends a lot on the laser field amplitude and temperature of the system.