Quantum Hall Effect in a Two-Dimensional Electron System Bent by 90 Degrees

Abstract

Using a new MBE growth technique, we fabricate a two-dimensional electron system which is bent around an atomically sharp 90 degree corner. In the quantum Hall regime under tilted magnetic fields, we can measure equilibration between both co- and counter-propagating edge channels of arbitrary filling factor ratio. We present here 4-point magnetotransport characterization of the corner junction with filling factor combinations which can all be explained using the standard Landauer-Buttiker edge channel picture. The success of this description confirms the realization of a new type of quantum Hall edge geometry.

4 pages, figures included Typographical errors corrected, reference added

References in corpus (3)

• Transport in an inhomogeneous interacting one--dimensional system
• Separately contacted edge states: A new spectroscopic tool for the investigation of the quantum Hall effect
• Andreev reflection in the fractional quantum Hall effect

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