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Magneto-transport characteristics of a 2D electron system driven to negative magneto-conductivity by microwave photoexcitation

Negative diagonal magneto-conductivity/resistivity is a spectacular- and thought provoking-property of driven, far-from-equilibrium, low dimensional electronic systems. The physical response of this exotic electronic state is not yet fully understood since it is rarely encountered in experiment. The...

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Autores principales: Mani, R. G., Kriisa, A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3858789/
https://www.ncbi.nlm.nih.gov/pubmed/24327200
http://dx.doi.org/10.1038/srep03478
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author Mani, R. G.
Kriisa, A.
author_facet Mani, R. G.
Kriisa, A.
author_sort Mani, R. G.
collection PubMed
description Negative diagonal magneto-conductivity/resistivity is a spectacular- and thought provoking-property of driven, far-from-equilibrium, low dimensional electronic systems. The physical response of this exotic electronic state is not yet fully understood since it is rarely encountered in experiment. The microwave-radiation-induced zero-resistance state in the high mobility GaAs/AlGaAs 2D electron system is believed to be an example where negative magneto-conductivity/resistivity is responsible for the observed phenomena. Here, we examine the magneto-transport characteristics of this negative conductivity/resistivity state in the microwave photo-excited two-dimensional electron system (2DES) through a numerical solution of the associated boundary value problem. The results suggest, surprisingly, that a bare negative diagonal conductivity/resistivity state in the 2DES under photo-excitation should yield a positive diagonal resistance, with a concomitant sign reversal in the Hall voltage.
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spelling pubmed-38587892013-12-11 Magneto-transport characteristics of a 2D electron system driven to negative magneto-conductivity by microwave photoexcitation Mani, R. G. Kriisa, A. Sci Rep Article Negative diagonal magneto-conductivity/resistivity is a spectacular- and thought provoking-property of driven, far-from-equilibrium, low dimensional electronic systems. The physical response of this exotic electronic state is not yet fully understood since it is rarely encountered in experiment. The microwave-radiation-induced zero-resistance state in the high mobility GaAs/AlGaAs 2D electron system is believed to be an example where negative magneto-conductivity/resistivity is responsible for the observed phenomena. Here, we examine the magneto-transport characteristics of this negative conductivity/resistivity state in the microwave photo-excited two-dimensional electron system (2DES) through a numerical solution of the associated boundary value problem. The results suggest, surprisingly, that a bare negative diagonal conductivity/resistivity state in the 2DES under photo-excitation should yield a positive diagonal resistance, with a concomitant sign reversal in the Hall voltage. Nature Publishing Group 2013-12-11 /pmc/articles/PMC3858789/ /pubmed/24327200 http://dx.doi.org/10.1038/srep03478 Text en Copyright © 2013, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-nd/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/3.0/
spellingShingle Article
Mani, R. G.
Kriisa, A.
Magneto-transport characteristics of a 2D electron system driven to negative magneto-conductivity by microwave photoexcitation
title Magneto-transport characteristics of a 2D electron system driven to negative magneto-conductivity by microwave photoexcitation
title_full Magneto-transport characteristics of a 2D electron system driven to negative magneto-conductivity by microwave photoexcitation
title_fullStr Magneto-transport characteristics of a 2D electron system driven to negative magneto-conductivity by microwave photoexcitation
title_full_unstemmed Magneto-transport characteristics of a 2D electron system driven to negative magneto-conductivity by microwave photoexcitation
title_short Magneto-transport characteristics of a 2D electron system driven to negative magneto-conductivity by microwave photoexcitation
title_sort magneto-transport characteristics of a 2d electron system driven to negative magneto-conductivity by microwave photoexcitation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3858789/
https://www.ncbi.nlm.nih.gov/pubmed/24327200
http://dx.doi.org/10.1038/srep03478
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