Magnetotransport in wide parabolic PbTe quantum wells

Details Magnetotransport in wide parabolic PbTe quantum wells Magnetotransport in wide parabolic PbTe quantum wells

1997-07-16

arxiv.org/abs/cond-mat/9707158v1

Surface Science 361/362, 525 (1996)

Physics

Condensed Matter

Materials Science

postscript file including 2 figs, 4 pages, Paper presented at EP2DS-XI, Nottingham 1995

Scientific paper

The 3D- and 2D- behaviour of wide parabolic PbTe single quantum wells, which consist of PbTe p-n-p-structures, are 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 300nm on can expect to observe 3D- and 2D-behaviour at the same time. Magnetotransport experiments in selectively contacted Hall bar samples are performed at temperatures down to T = 50 mK and at magnetic fields up to B = 17 T.

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