Magnetotransport in PbTe nipi structures
J. Oswald, M. Pippan, G. Heigl, G. Span, T. Stellberger (Institute of, Physics, University of Leoben, Austria)
TL;DR
This paper investigates the combined 2D and 3D magnetotransport behaviors in PbTe nipi-structure quantum wells through theoretical modeling and experimental validation, highlighting the conditions for observing both behaviors simultaneously.
Contribution
It introduces a simple model that integrates 2D subband and 3D Landau levels to analyze magnetotransport in PbTe quantum wells, and discusses design aspects for wide quantum wells.
Findings
Simultaneous 2D and 3D behavior observed at ~500 nm channel width
Model successfully predicts density of states in magnetic fields
Design guidelines for PbTe wide quantum wells provided
Abstract
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.
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Taxonomy
TopicsQuantum and electron transport phenomena · Topological Materials and Phenomena · 2D Materials and Applications