Fractional Quantum Conductance Plateaus in Mosaic-Like Conductors and Their Similarities to the Fractional Quantum Hall Effect

Journal article
(Letter)


Publication Details

Author(s): Kißlinger F, Rienmüller D, Ott C, Kampert E, Weber HB
Journal: Annalen Der Physik
Publication year: 2019
ISSN: 0003-3804


Abstract

A simple route to generate magnetotransport data is reported that
results in fractional quantum Hall plateaus in the conductance without
invoking strongly correlated physics. Ingredients to the generating
model are conducting tiles with integer quantum Hall effect and metallic
linkers, further Kirchhoff rules. When connecting few identical tiles
in a mosaic, fractional steps occur in the conductance values. Richer
spectra representing several fractions occur when the tiles are
parametrically varied. Parts of the simulation data are supported with
purposefully designed graphene mosaics in high magnetic fields. The
findings emphasize that the occurrence of fractional conductance values,
in particular in two‐terminal measurements, does not necessarily
indicate interaction‐driven physics. The importance of an independent
determination of charge densities is underscored and similarities with
and differences to the fractional quantum Hall effect are
critically discussed.


FAU Authors / FAU Editors

Kißlinger, Ferdinand
Lehrstuhl für Angewandte Physik
Ott, Christian
Lehrstuhl für Angewandte Physik
Weber, Heiko B. Prof. Dr.
Lehrstuhl für Angewandte Physik


How to cite

APA:
Kißlinger, F., Rienmüller, D., Ott, C., Kampert, E., & Weber, H.B. (2019). Fractional Quantum Conductance Plateaus in Mosaic-Like Conductors and Their Similarities to the Fractional Quantum Hall Effect. Annalen Der Physik. https://dx.doi.org/10.1002/andp.201800188

MLA:
Kißlinger, Ferdinand, et al. "Fractional Quantum Conductance Plateaus in Mosaic-Like Conductors and Their Similarities to the Fractional Quantum Hall Effect." Annalen Der Physik (2019).

BibTeX: 

Last updated on 2019-28-02 at 14:23