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Nonequilibrium charge-density-wave order beyond the thermal limit

The interaction of many-body systems with intense light pulses may lead to novel emergent phenomena far from equilibrium. Recent discoveries, such as the optical enhancement of the critical temperature in certain superconductors and the photo-stabilization of hidden phases, have turned this field in...

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Autores principales: Maklar, J., Windsor, Y. W., Nicholson, C. W., Puppin, M., Walmsley, P., Esposito, V., Porer, M., Rittmann, J., Leuenberger, D., Kubli, M., Savoini, M., Abreu, E., Johnson, S. L., Beaud, P., Ingold, G., Staub, U., Fisher, I. R., Ernstorfer, R., Wolf, M., Rettig, L.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8093280/
https://www.ncbi.nlm.nih.gov/pubmed/33941788
http://dx.doi.org/10.1038/s41467-021-22778-w
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author Maklar, J.
Windsor, Y. W.
Nicholson, C. W.
Puppin, M.
Walmsley, P.
Esposito, V.
Porer, M.
Rittmann, J.
Leuenberger, D.
Kubli, M.
Savoini, M.
Abreu, E.
Johnson, S. L.
Beaud, P.
Ingold, G.
Staub, U.
Fisher, I. R.
Ernstorfer, R.
Wolf, M.
Rettig, L.
author_facet Maklar, J.
Windsor, Y. W.
Nicholson, C. W.
Puppin, M.
Walmsley, P.
Esposito, V.
Porer, M.
Rittmann, J.
Leuenberger, D.
Kubli, M.
Savoini, M.
Abreu, E.
Johnson, S. L.
Beaud, P.
Ingold, G.
Staub, U.
Fisher, I. R.
Ernstorfer, R.
Wolf, M.
Rettig, L.
author_sort Maklar, J.
collection PubMed
description The interaction of many-body systems with intense light pulses may lead to novel emergent phenomena far from equilibrium. Recent discoveries, such as the optical enhancement of the critical temperature in certain superconductors and the photo-stabilization of hidden phases, have turned this field into an important research frontier. Here, we demonstrate nonthermal charge-density-wave (CDW) order at electronic temperatures far greater than the thermodynamic transition temperature. Using time- and angle-resolved photoemission spectroscopy and time-resolved X-ray diffraction, we investigate the electronic and structural order parameters of an ultrafast photoinduced CDW-to-metal transition. Tracking the dynamical CDW recovery as a function of electronic temperature reveals a behaviour markedly different from equilibrium, which we attribute to the suppression of lattice fluctuations in the transient nonthermal phonon distribution. A complete description of the system’s coherent and incoherent order-parameter dynamics is given by a time-dependent Ginzburg-Landau framework, providing access to the transient potential energy surfaces.
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spelling pubmed-80932802021-05-11 Nonequilibrium charge-density-wave order beyond the thermal limit Maklar, J. Windsor, Y. W. Nicholson, C. W. Puppin, M. Walmsley, P. Esposito, V. Porer, M. Rittmann, J. Leuenberger, D. Kubli, M. Savoini, M. Abreu, E. Johnson, S. L. Beaud, P. Ingold, G. Staub, U. Fisher, I. R. Ernstorfer, R. Wolf, M. Rettig, L. Nat Commun Article The interaction of many-body systems with intense light pulses may lead to novel emergent phenomena far from equilibrium. Recent discoveries, such as the optical enhancement of the critical temperature in certain superconductors and the photo-stabilization of hidden phases, have turned this field into an important research frontier. Here, we demonstrate nonthermal charge-density-wave (CDW) order at electronic temperatures far greater than the thermodynamic transition temperature. Using time- and angle-resolved photoemission spectroscopy and time-resolved X-ray diffraction, we investigate the electronic and structural order parameters of an ultrafast photoinduced CDW-to-metal transition. Tracking the dynamical CDW recovery as a function of electronic temperature reveals a behaviour markedly different from equilibrium, which we attribute to the suppression of lattice fluctuations in the transient nonthermal phonon distribution. A complete description of the system’s coherent and incoherent order-parameter dynamics is given by a time-dependent Ginzburg-Landau framework, providing access to the transient potential energy surfaces. Nature Publishing Group UK 2021-05-03 /pmc/articles/PMC8093280/ /pubmed/33941788 http://dx.doi.org/10.1038/s41467-021-22778-w 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
Maklar, J.
Windsor, Y. W.
Nicholson, C. W.
Puppin, M.
Walmsley, P.
Esposito, V.
Porer, M.
Rittmann, J.
Leuenberger, D.
Kubli, M.
Savoini, M.
Abreu, E.
Johnson, S. L.
Beaud, P.
Ingold, G.
Staub, U.
Fisher, I. R.
Ernstorfer, R.
Wolf, M.
Rettig, L.
Nonequilibrium charge-density-wave order beyond the thermal limit
title Nonequilibrium charge-density-wave order beyond the thermal limit
title_full Nonequilibrium charge-density-wave order beyond the thermal limit
title_fullStr Nonequilibrium charge-density-wave order beyond the thermal limit
title_full_unstemmed Nonequilibrium charge-density-wave order beyond the thermal limit
title_short Nonequilibrium charge-density-wave order beyond the thermal limit
title_sort nonequilibrium charge-density-wave order beyond the thermal limit
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8093280/
https://www.ncbi.nlm.nih.gov/pubmed/33941788
http://dx.doi.org/10.1038/s41467-021-22778-w
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