Robustness of the Quantum Hall Effect, Sample Size Versus Sample Topology, and Quality Control Management of III–V Molecular Beam Epitaxy

Author:

Tscheuschner Ralf D.1,Hoch Sascha1,Leschinsky Eva1,Meier Cedrik1,Theis Sabine1,Wieck Andreas D.1

Affiliation:

1. Augewandte Festkörperphysik, Ruhr-Universität Bochum, Universitätsstraße 150, D-44780 Bochum, Federal Republic of Germany, Germany

Abstract

We measure the IQHE on macroscopic (1.5 cm × 1.5 cm) "quick and dirty" prepared III–V heterostructure samples with van der Pauw and modified Corbino geometries at 1.3 K. We compare our results with (i) data taken on smaller specimens, among them samples with a standard Hall bar geometry, (ii) results of our numerical analysis taking inhomogenities of the 2DEG into account. Our main finding is a confirmation of the expected robustness of the IQHE which favors the development of wide plateaux for small filling factors and very large samples sizes (here with areas 10 000 times larger than in standard arrangements).

Publisher

World Scientific Pub Co Pte Lt

Subject

Condensed Matter Physics,Statistical and Nonlinear Physics

Cited by 3 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Boundary conditions for the quantum Hall effect;Journal of Physics A: Mathematical and Theoretical;2023-01-13

2. FALSIFICATION OF THE ATMOSPHERICCO2GREENHOUSE EFFECTS WITHIN THE FRAME OF PHYSICS;International Journal of Modern Physics B;2009-01-30

3. Quantum Hall effect in long and in mobility adjusted GaAs/AlxGa1-xAs samples;physica status solidi (b);2008-02

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