On Stable Trajectories in Systems with a Low Carrier Density and the Importance of Using Spectroscopy in Experiments with a Moveable Gate

Abstract

The question of the presence of stable trajectories of motion in systems with low charge-carrier densities is considered. A phenomenological model is suggested, which implies the introduction of a new characteristic, namely, the scattering time between stable trajectories, which is significantly greater than the scattering time within a trajectory. This model makes it possible to describe the latest experimental data obtained with an InAs nanowhisker using a scan gate. The importance of using spectroscopy in experiments with a scan gate to obtain the spatial distribution of charge carriers and currents in one-dimensional and two-dimensional structures is discussed.