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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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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2013
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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. |
format | Online Article Text |
id | pubmed-3858789 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
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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