Magnetotransport in PbTe nipi structures

In this paper the 3D- and 2D- behavior of wide quantum wells which consist of one period of a PbTe nipi-structure is studied theoretically and experimentally. A simple model combines the 2D- subband levels and the 3D-Landau levels in order to calculate the density of states in a magnetic field perpendicular to the 2D plane. It is shown that at a channel width of about 500 nm on can expect to observe 3D- and 2D-behavior at the same time. Finally the general design aspects for PbTe wide quantum wells are discussed.