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  Nonequilibrium Charge-Density-Wave Order Beyond the Thermal Limit

Maklar, J., Windsor, Y. W., Nicholson, C. W., Puppin, M., Walmsley, P., Esposito, V., et al. (2021). Nonequilibrium Charge-Density-Wave Order Beyond the Thermal Limit. Nature Communications, 12: 2499. doi:10.1038/s41467-021-22778-w.

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 Creators:
Maklar, Julian1, Author           
Windsor, Yoav William1, Author           
Nicholson, Christopher W.1, Author           
Puppin, Michele1, Author           
Walmsley, P.2, 3, Author
Esposito, V.3, 4, Author
Porer, M.4, Author
Rittmann, J.4, Author
Leuenberger, D.5, Author
Kubli, M.6, Author
Savoini, M.6, Author
Abreu, E.6, Author
Johnson, S. L.6, Author
Beaud, P.4, Author
Ingold, G.4, Author
Staub, U.4, Author
Fisher, I. R.2, 3, Author
Ernstorfer, Ralph1, Author           
Wolf, Martin1, Author           
Rettig, Laurenz1, Author           
Affiliations:
1Physical Chemistry, Fritz Haber Institute, Max Planck Society, ou_634546              
2Geballe Laboratory for Advanced Materials and Department of Applied Physics, Stanford University, CA 94305, USA, ou_persistent22              
3Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA, ou_persistent22              
4Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland, ou_persistent22              
5Department of Physics, University of Zürich, CH-8057 Zürich, Switzerland, ou_persistent22              
6Institute for Quantum Electronics, Physics Department, ETH Zürich, CH-8093 Zürich, Switzerland, ou_persistent22              

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Free keywords: Condensed Matter, Materials Science, cond-mat.mtrl-sci
 Abstract: 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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Language(s): eng - English
 Dates: 2020-11-062020-11-022021-03-262021-05-03
 Publication Status: Published online
 Pages: 8
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Degree: -

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Project name : FLATLAND - Electron-lattice-spin correlations and many-body phenomena in 2D semiconductors and related heterostructures
Grant ID : 682843
Funding program : Horizon 2020 (H2020)
Funding organization : European Commission (EC)

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Title: Nature Communications
  Abbreviation : Nat. Commun.
Source Genre: Journal
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Publ. Info: London : Nature Publishing Group
Pages: 8 Volume / Issue: 12 Sequence Number: 2499 Start / End Page: - Identifier: ISSN: 2041-1723
CoNE: https://pure.mpg.de/cone/journals/resource/2041-1723