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Charge order textures induced by non-linear couplings in a half-doped manganite
The self-organization of strongly interacting electrons into superlattice structures underlies the properties of many quantum materials. How these electrons arrange within the superlattice dictates what symmetries are broken and what ground states are stabilized. Here we show that cryogenic scanning...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8213702/ https://www.ncbi.nlm.nih.gov/pubmed/34145244 http://dx.doi.org/10.1038/s41467-021-24026-7 |
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author | El Baggari, Ismail Baek, David J. Zachman, Michael J. Lu, Di Hikita, Yasuyuki Hwang, Harold Y. Nowadnick, Elizabeth A. Kourkoutis, Lena F. |
author_facet | El Baggari, Ismail Baek, David J. Zachman, Michael J. Lu, Di Hikita, Yasuyuki Hwang, Harold Y. Nowadnick, Elizabeth A. Kourkoutis, Lena F. |
author_sort | El Baggari, Ismail |
collection | PubMed |
description | The self-organization of strongly interacting electrons into superlattice structures underlies the properties of many quantum materials. How these electrons arrange within the superlattice dictates what symmetries are broken and what ground states are stabilized. Here we show that cryogenic scanning transmission electron microscopy (cryo-STEM) enables direct mapping of local symmetries and order at the intra-unit-cell level in the model charge-ordered system Nd(1/2)Sr(1/2)MnO(3). In addition to imaging the prototypical site-centered charge order, we discover the nanoscale coexistence of an exotic intermediate state which mixes site and bond order and breaks inversion symmetry. We further show that nonlinear coupling of distinct lattice modes controls the selection between competing ground states. The results demonstrate the importance of lattice coupling for understanding and manipulating the character of electronic self-organization and that cryo-STEM can reveal local order in strongly correlated systems at the atomic scale. |
format | Online Article Text |
id | pubmed-8213702 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-82137022021-07-01 Charge order textures induced by non-linear couplings in a half-doped manganite El Baggari, Ismail Baek, David J. Zachman, Michael J. Lu, Di Hikita, Yasuyuki Hwang, Harold Y. Nowadnick, Elizabeth A. Kourkoutis, Lena F. Nat Commun Article The self-organization of strongly interacting electrons into superlattice structures underlies the properties of many quantum materials. How these electrons arrange within the superlattice dictates what symmetries are broken and what ground states are stabilized. Here we show that cryogenic scanning transmission electron microscopy (cryo-STEM) enables direct mapping of local symmetries and order at the intra-unit-cell level in the model charge-ordered system Nd(1/2)Sr(1/2)MnO(3). In addition to imaging the prototypical site-centered charge order, we discover the nanoscale coexistence of an exotic intermediate state which mixes site and bond order and breaks inversion symmetry. We further show that nonlinear coupling of distinct lattice modes controls the selection between competing ground states. The results demonstrate the importance of lattice coupling for understanding and manipulating the character of electronic self-organization and that cryo-STEM can reveal local order in strongly correlated systems at the atomic scale. Nature Publishing Group UK 2021-06-18 /pmc/articles/PMC8213702/ /pubmed/34145244 http://dx.doi.org/10.1038/s41467-021-24026-7 Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/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/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article El Baggari, Ismail Baek, David J. Zachman, Michael J. Lu, Di Hikita, Yasuyuki Hwang, Harold Y. Nowadnick, Elizabeth A. Kourkoutis, Lena F. Charge order textures induced by non-linear couplings in a half-doped manganite |
title | Charge order textures induced by non-linear couplings in a half-doped manganite |
title_full | Charge order textures induced by non-linear couplings in a half-doped manganite |
title_fullStr | Charge order textures induced by non-linear couplings in a half-doped manganite |
title_full_unstemmed | Charge order textures induced by non-linear couplings in a half-doped manganite |
title_short | Charge order textures induced by non-linear couplings in a half-doped manganite |
title_sort | charge order textures induced by non-linear couplings in a half-doped manganite |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8213702/ https://www.ncbi.nlm.nih.gov/pubmed/34145244 http://dx.doi.org/10.1038/s41467-021-24026-7 |
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