Microwave spectroscopic observation of distinct electron solid phases in wide quantum wells

In high magnetic fields, two-dimensional electron systems can form a number of phases in which interelectron repulsion plays the central role, since the kinetic energy is frozen out by Landau quantization. These phases include the well-known liquids of the fractional quantum Hall effect, as well as...

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Main Authors:	Hatke, A. T., Liu, Yang, Magill, B. A., Moon, B. H., Engel, L. W., Shayegan, M., Pfeiffer, L. N., West, K. W., Baldwin, K. W.
Format:	Online
Language:	English
Published:	Nature Pub. Group 2014
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4083423/

id	pubmed-4083423
recordtype	oai_dc
spelling	pubmed-40834232014-07-09 Microwave spectroscopic observation of distinct electron solid phases in wide quantum wells Hatke, A. T. Liu, Yang Magill, B. A. Moon, B. H. Engel, L. W. Shayegan, M. Pfeiffer, L. N. West, K. W. Baldwin, K. W. Article In high magnetic fields, two-dimensional electron systems can form a number of phases in which interelectron repulsion plays the central role, since the kinetic energy is frozen out by Landau quantization. These phases include the well-known liquids of the fractional quantum Hall effect, as well as solid phases with broken spatial symmetry and crystalline order. Solids can occur at the low Landau-filling termination of the fractional quantum Hall effect series but also within integer quantum Hall effects. Here we present microwave spectroscopy studies of wide quantum wells that clearly reveal two distinct solid phases, hidden within what in d.c. transport would be the zero diagonal conductivity of an integer quantum-Hall-effect state. Explanation of these solids is not possible with the simple picture of a Wigner solid of ordinary (quasi) electrons or holes. Nature Pub. Group 2014-06-20 /pmc/articles/PMC4083423/ /pubmed/24948190 http://dx.doi.org/10.1038/ncomms5154 Text en Copyright © 2014, Nature Publishing Group, a division of 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 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/4.0/
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Hatke, A. T. Liu, Yang Magill, B. A. Moon, B. H. Engel, L. W. Shayegan, M. Pfeiffer, L. N. West, K. W. Baldwin, K. W.
spellingShingle	Hatke, A. T. Liu, Yang Magill, B. A. Moon, B. H. Engel, L. W. Shayegan, M. Pfeiffer, L. N. West, K. W. Baldwin, K. W. Microwave spectroscopic observation of distinct electron solid phases in wide quantum wells
author_facet	Hatke, A. T. Liu, Yang Magill, B. A. Moon, B. H. Engel, L. W. Shayegan, M. Pfeiffer, L. N. West, K. W. Baldwin, K. W.
author_sort	Hatke, A. T.
title	Microwave spectroscopic observation of distinct electron solid phases in wide quantum wells
title_short	Microwave spectroscopic observation of distinct electron solid phases in wide quantum wells
title_full	Microwave spectroscopic observation of distinct electron solid phases in wide quantum wells
title_fullStr	Microwave spectroscopic observation of distinct electron solid phases in wide quantum wells
title_full_unstemmed	Microwave spectroscopic observation of distinct electron solid phases in wide quantum wells
title_sort	microwave spectroscopic observation of distinct electron solid phases in wide quantum wells
description	In high magnetic fields, two-dimensional electron systems can form a number of phases in which interelectron repulsion plays the central role, since the kinetic energy is frozen out by Landau quantization. These phases include the well-known liquids of the fractional quantum Hall effect, as well as solid phases with broken spatial symmetry and crystalline order. Solids can occur at the low Landau-filling termination of the fractional quantum Hall effect series but also within integer quantum Hall effects. Here we present microwave spectroscopy studies of wide quantum wells that clearly reveal two distinct solid phases, hidden within what in d.c. transport would be the zero diagonal conductivity of an integer quantum-Hall-effect state. Explanation of these solids is not possible with the simple picture of a Wigner solid of ordinary (quasi) electrons or holes.
publisher	Nature Pub. Group
publishDate	2014
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4083423/
_version_	1613108750883749888

Microwave spectroscopic observation of distinct electron solid phases in wide quantum wells

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