Publication

Hartree simulations of coupled quantum Hall edge states in corner-overgrown heterostructures

Anna Fontcuberta i Morral
2013
Journal Articles

Abstract

The electronic states in a corner-overgrown bent GaAs/AlGaAs quantum well heterostructure are studied with numerical Hartree simulations. Transmission electron microscope pictures of the junction sharpness are shown to justify the sharp-corner potential assumed for these calculations. In a tilted magnetic field, both facets of the bent quantum well are brought to a quantum Hall (QH) state, and the corner hosts an unconventional hybrid system of coupled counter-propagating quantum Hall edges and an additional 1D accumulation wire. We show how, in contrast to coplanar barrier-junctions of QH systems, the coupling between the three subsystems increases as a function of the applied magnetic field, and discuss the implications of the numerical results for the interpretation of experimental data on bent quantum Hall systems reported elsewhere. DOI: 10.1103/PhysRevB.87.165428

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https://infoscience.epfl.ch/entities/publication/28f7f8a5-0cad-46d5-8c87-fa3b3e7e7cce

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Anna Fontcuberta i Morral
2013
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/28f7f8a5-0cad-46d5-8c87-fa3b3e7e7cce

About this result

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