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Light-induced dimension crossover dictated by excitonic correlations
In low-dimensional systems with strong electronic correlations, the application of an ultrashort laser pulse often yields novel phases that are otherwise inaccessible. The central challenge in understanding such phenomena is to determine how dimensionality and many-body correlations together govern...
Autores principales: | , , , , , , , , , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8857203/ https://www.ncbi.nlm.nih.gov/pubmed/35181649 http://dx.doi.org/10.1038/s41467-022-28309-5 |
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author | Cheng, Yun Zong, Alfred Li, Jun Xia, Wei Duan, Shaofeng Zhao, Wenxuan Li, Yidian Qi, Fengfeng Wu, Jun Zhao, Lingrong Zhu, Pengfei Zou, Xiao Jiang, Tao Guo, Yanfeng Yang, Lexian Qian, Dong Zhang, Wentao Kogar, Anshul Zuerch, Michael W. Xiang, Dao Zhang, Jie |
author_facet | Cheng, Yun Zong, Alfred Li, Jun Xia, Wei Duan, Shaofeng Zhao, Wenxuan Li, Yidian Qi, Fengfeng Wu, Jun Zhao, Lingrong Zhu, Pengfei Zou, Xiao Jiang, Tao Guo, Yanfeng Yang, Lexian Qian, Dong Zhang, Wentao Kogar, Anshul Zuerch, Michael W. Xiang, Dao Zhang, Jie |
author_sort | Cheng, Yun |
collection | PubMed |
description | In low-dimensional systems with strong electronic correlations, the application of an ultrashort laser pulse often yields novel phases that are otherwise inaccessible. The central challenge in understanding such phenomena is to determine how dimensionality and many-body correlations together govern the pathway of a non-adiabatic transition. To this end, we examine a layered compound, 1T-TiSe(2), whose three-dimensional charge-density-wave (3D CDW) state also features exciton condensation due to strong electron-hole interactions. We find that photoexcitation suppresses the equilibrium 3D CDW while creating a nonequilibrium 2D CDW. Remarkably, the dimension reduction does not occur unless bound electron-hole pairs are broken. This relation suggests that excitonic correlations maintain the out-of-plane CDW coherence, settling a long-standing debate over their role in the CDW transition. Our findings demonstrate how optical manipulation of electronic interaction enables one to control the dimensionality of a broken-symmetry order, paving the way for realizing other emergent states in strongly correlated systems. |
format | Online Article Text |
id | pubmed-8857203 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-88572032022-03-04 Light-induced dimension crossover dictated by excitonic correlations Cheng, Yun Zong, Alfred Li, Jun Xia, Wei Duan, Shaofeng Zhao, Wenxuan Li, Yidian Qi, Fengfeng Wu, Jun Zhao, Lingrong Zhu, Pengfei Zou, Xiao Jiang, Tao Guo, Yanfeng Yang, Lexian Qian, Dong Zhang, Wentao Kogar, Anshul Zuerch, Michael W. Xiang, Dao Zhang, Jie Nat Commun Article In low-dimensional systems with strong electronic correlations, the application of an ultrashort laser pulse often yields novel phases that are otherwise inaccessible. The central challenge in understanding such phenomena is to determine how dimensionality and many-body correlations together govern the pathway of a non-adiabatic transition. To this end, we examine a layered compound, 1T-TiSe(2), whose three-dimensional charge-density-wave (3D CDW) state also features exciton condensation due to strong electron-hole interactions. We find that photoexcitation suppresses the equilibrium 3D CDW while creating a nonequilibrium 2D CDW. Remarkably, the dimension reduction does not occur unless bound electron-hole pairs are broken. This relation suggests that excitonic correlations maintain the out-of-plane CDW coherence, settling a long-standing debate over their role in the CDW transition. Our findings demonstrate how optical manipulation of electronic interaction enables one to control the dimensionality of a broken-symmetry order, paving the way for realizing other emergent states in strongly correlated systems. Nature Publishing Group UK 2022-02-18 /pmc/articles/PMC8857203/ /pubmed/35181649 http://dx.doi.org/10.1038/s41467-022-28309-5 Text en © The Author(s) 2022 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 Cheng, Yun Zong, Alfred Li, Jun Xia, Wei Duan, Shaofeng Zhao, Wenxuan Li, Yidian Qi, Fengfeng Wu, Jun Zhao, Lingrong Zhu, Pengfei Zou, Xiao Jiang, Tao Guo, Yanfeng Yang, Lexian Qian, Dong Zhang, Wentao Kogar, Anshul Zuerch, Michael W. Xiang, Dao Zhang, Jie Light-induced dimension crossover dictated by excitonic correlations |
title | Light-induced dimension crossover dictated by excitonic correlations |
title_full | Light-induced dimension crossover dictated by excitonic correlations |
title_fullStr | Light-induced dimension crossover dictated by excitonic correlations |
title_full_unstemmed | Light-induced dimension crossover dictated by excitonic correlations |
title_short | Light-induced dimension crossover dictated by excitonic correlations |
title_sort | light-induced dimension crossover dictated by excitonic correlations |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8857203/ https://www.ncbi.nlm.nih.gov/pubmed/35181649 http://dx.doi.org/10.1038/s41467-022-28309-5 |
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