Wave function of 2D electrons in a parallel magnetic field
Filin A. I. , von Klitzing K. , Kukushkin I. V., Larionov A. V.
The electron density in the tail of the wave function of 2D electrons has been observed to depend in a nonmonotonic way on the strength of a parallel magnetic field. This behavior is explained in terms of a competition between two processes. In the limit of weak magnetic fields, the amplitude of the wave function is observed to increase with increasing field. This increase occurs because the maximum of the electron density is driven away from the interface by the Lorentz force. In strong fields, in contrast, the predominant effect is a localization of the electron wave function within a magnetic length of the interface. The experimental data agree well with theoretical results derived in the parabolic approximation. © 1995 American Institute of Physics.