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Magnetic induction dependence of Hall resistance in Fractional Quantum Hall Effect

Quantum Hall effects (QHE) are observed in two-dimensional electron systems realised in semiconductors and graphene. In QHE the Hall resistance exhibits plateaus as a function of magnetic induction. In the fractional quantum Hall effects (FQHE) the values of the Hall resistance on plateaus are h/e(2...

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Autor principal: Toyoda, Tadashi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6109190/
https://www.ncbi.nlm.nih.gov/pubmed/30143739
http://dx.doi.org/10.1038/s41598-018-31205-y
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author Toyoda, Tadashi
author_facet Toyoda, Tadashi
author_sort Toyoda, Tadashi
collection PubMed
description Quantum Hall effects (QHE) are observed in two-dimensional electron systems realised in semiconductors and graphene. In QHE the Hall resistance exhibits plateaus as a function of magnetic induction. In the fractional quantum Hall effects (FQHE) the values of the Hall resistance on plateaus are h/e(2) divided by rational fractions, where −e is the electron charge and h is the Planck constant. The magnetic induction dependence of the Hall resistance is the strongest experimental evidence for FQHE. Nevertheless a quantitative theory of the magnetic induction and temperature dependence of the Hall resistance is still missing. Here we constructed a model for the Hall resistance as a function of magnetic induction, chemical potential and temperature. We assume phenomenological perturbation terms in the single-electron energy spectrum. The perturbation terms successively split a Landau level into sublevels, whose reduced degeneracies cause the fractional quantization of Hall resistance. The model yields all 75 odd-denominator fractional plateaus that have been experimentally found. The calculated magnetic induction dependence of the Hall resistance is consistent with experiments. This theory shows that the Fermi liquid theory is valid for FQHE.
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spelling pubmed-61091902018-08-31 Magnetic induction dependence of Hall resistance in Fractional Quantum Hall Effect Toyoda, Tadashi Sci Rep Article Quantum Hall effects (QHE) are observed in two-dimensional electron systems realised in semiconductors and graphene. In QHE the Hall resistance exhibits plateaus as a function of magnetic induction. In the fractional quantum Hall effects (FQHE) the values of the Hall resistance on plateaus are h/e(2) divided by rational fractions, where −e is the electron charge and h is the Planck constant. The magnetic induction dependence of the Hall resistance is the strongest experimental evidence for FQHE. Nevertheless a quantitative theory of the magnetic induction and temperature dependence of the Hall resistance is still missing. Here we constructed a model for the Hall resistance as a function of magnetic induction, chemical potential and temperature. We assume phenomenological perturbation terms in the single-electron energy spectrum. The perturbation terms successively split a Landau level into sublevels, whose reduced degeneracies cause the fractional quantization of Hall resistance. The model yields all 75 odd-denominator fractional plateaus that have been experimentally found. The calculated magnetic induction dependence of the Hall resistance is consistent with experiments. This theory shows that the Fermi liquid theory is valid for FQHE. Nature Publishing Group UK 2018-08-24 /pmc/articles/PMC6109190/ /pubmed/30143739 http://dx.doi.org/10.1038/s41598-018-31205-y Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Toyoda, Tadashi
Magnetic induction dependence of Hall resistance in Fractional Quantum Hall Effect
title Magnetic induction dependence of Hall resistance in Fractional Quantum Hall Effect
title_full Magnetic induction dependence of Hall resistance in Fractional Quantum Hall Effect
title_fullStr Magnetic induction dependence of Hall resistance in Fractional Quantum Hall Effect
title_full_unstemmed Magnetic induction dependence of Hall resistance in Fractional Quantum Hall Effect
title_short Magnetic induction dependence of Hall resistance in Fractional Quantum Hall Effect
title_sort magnetic induction dependence of hall resistance in fractional quantum hall effect
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6109190/
https://www.ncbi.nlm.nih.gov/pubmed/30143739
http://dx.doi.org/10.1038/s41598-018-31205-y
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