ИСТИНА

For the intensive use of low-dimensional electronic systems in nanoelectronics, it is necessary to obtain comprehensive information on the physical characteristics of the systems under consideration. Such information can be obtained by studying electronic transport phenomena in low-dimensional systems. The physical properties of quasi-two-dimensional systems differ significantly from the properties of ordinary isotropic or weakly anisotropic conductors. Various scattering mechanisms of conduction electrons significantly affect the electronic transfer phenomena. Therefore, when studying transport phenomena, it is necessary to take into account all possible scattering mechanisms of current carriers. In quasi-two-dimensional systems, the anisotropy of the structure and energy spectrum of conduction electrons leads to specific features of the scattering mechanisms. Consequently, an accurate determination of the scattering mechanism plays an important role in comparing experimental results with theory. In the paper, the relaxation time of conduction electrons for the scattering on acoustic and polar optical phonons in superlattices in a strong magnetic field is calculated. Has been studied the probability of intraband and interband scattering. It was found that in a strong magnetic field for scattering by acoustic phonons, intraband transitions prevail, while in scattering by polar optical phonons, interband transitions prevail. It is shown that the relaxation time is proportional to the density of states, which depends on the magnetic field.