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Composite fermion liquid to Wigner solid transition in the lowest Landau level of zinc oxide

Maryenko, D. and McCollam, A. and Falson, J. and Kozuka, Y. and Bruin, J. and Zeitler, U. and Kawasaki, M. (2018) Composite fermion liquid to Wigner solid transition in the lowest Landau level of zinc oxide. Nature Communications, 9 . Art. No. 4356. ISSN 2041-1723. PMCID PMC6195604.

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Interactions between the constituents of a condensed matter system can drive it through a plethora of different phases due to many-body effects. A prominent platform for it is a dilute two-dimensional electron system in a magnetic field, which evolves intricately through various gaseous, liquid and solid phases governed by Coulomb interaction. Here we report on the experimental observation of a phase transition between the composite fermion liquid and adjacent magnetic field induced phase with a character of Wigner solid. The experiments are performed in the lowest Landau level of a MgZnO/ZnO two-dimensional electron system with attributes of both a liquid and a solid. An in-plane magnetic field component applied on top of the perpendicular magnetic field extends the Wigner-like phase further into the composite fermion liquid phase region. Our observations indicate the direct competition between a composite fermion liquid and a Wigner solid formed either by electrons or composite fermions.

Item Type:Article
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URLURL TypeDescription CentralArticle Paper
Falson, J.0000-0003-3183-9864
Kozuka, Y.0000-0001-7674-600X
Kawasaki, M.0000-0001-6397-4812
Alternate Title:Phase transition from a composite fermion liquid to a Wigner solid in the lowest Landau level of ZnO
Additional Information:© The Author(s) 2018. 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 Received 9 July 2018. Accepted 27 September 2018. Published 19 October 2018. We acknowledge the support of the HFML-RU/FOM member of the European Magnetic Field Laboratory (EMFL). This work was partly supported by JST CREST No. JPMJCR16F1. We would like to thank M. Kawamura, A. S. Mishchenko, M. Ueda, K. von Klitzing, N. Nagaosa, and J. K. Jain for fruitful discussions and comments. Author Contributions: D.M. and M.K. initiated the project. M.K. supervised the project. D.M. conceived and designed the experiment. J.F. and Y.K. fabricated the samples. D.M., A.M., J.B., and U.Z. performed the high-field magnetotransport experiment and analyzed the data. D.M. and U.Z. wrote the paper with input from all co-authors. Data availability: The data that support the findings of this study are available from the corresponding author upon request. The authors declare no competing interests.
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European Magnetic Field LaboratoryUNSPECIFIED
Japan Science and Technology AgencyJPMJCR16F1
PubMed Central ID:PMC6195604
Record Number:CaltechAUTHORS:20200402-144732751
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Official Citation:Maryenko, D., McCollam, A., Falson, J. et al. Composite fermion liquid to Wigner solid transition in the lowest Landau level of zinc oxide. Nat Commun 9, 4356 (2018).
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:102285
Deposited By: George Porter
Deposited On:03 Apr 2020 17:38
Last Modified:03 Apr 2020 17:38

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