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  Electron–phonon-driven three-dimensional metallicity in an insulating cuprate

Baldini, E., Sentef, M. A., Acharya, S., Brumme, T., Sheveleva, E., Lyzwa, F., et al. (2020). Electron–phonon-driven three-dimensional metallicity in an insulating cuprate. Proceedings of the National Academy of Sciences of the United States of America, 117(12), 6409-6416. doi:10.1073/pnas.1919451117.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-72B2-1 Version Permalink: http://hdl.handle.net/21.11116/0000-0005-F003-8
Genre: Journal Article

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https://arxiv.org/abs/2001.02624 (Preprint)
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https://dx.doi.org/10.1073/pnas.1919451117 (Publisher version)
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 Creators:
Baldini, E.1, 2, Author
Sentef, M. A.3, Author              
Acharya, S.4, Author
Brumme, T.5, 6, Author              
Sheveleva, E.7, Author
Lyzwa, F.7, Author
Pomjakushina, E.8, Author
Bernhard, C.7, Author
van Schilfgaarde, M.4, Author
Carbone, F.1, Author
Rubio, A.5, 9, 10, Author              
Weber, C.4, Author
Affiliations:
1Institute of Physics, Laboratory for Ultrafast Microscopy and Electron Scattering, École Polytechnique Fédérale de Lausanne, ou_persistent22              
2Institute of Chemical Sciences and Engineering, Laboratory of Ultrafast Spectroscopy, École Polytechnique Fédérale de Lausanne, ou_persistent22              
3Theoretical Description of Pump-Probe Spectroscopies in Solids, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_3012828              
4Department of Physics, King’s College London, ou_persistent22              
5Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266715              
6Wilhelm Ostwald Institut of Physical and Theoretical Chemistry, University of Leipzig, ou_persistent22              
7Department of Physics, University of Fribourg, ou_persistent22              
8Solid State Chemistry Group, Laboratory for Multiscale Materials Experiments, Paul Scherrer Institute, ou_persistent22              
9Nano-Bio Spectroscopy Group, Departamento de Física de Materiales, Universidad del País Vasco, ou_persistent22              
10Center for Computational Quantum Physics, The Flatiron Institute, ou_persistent22              

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Free keywords: insulator–metal transition, cuprates, ultrafast optics, electron–phononcoupling
 Abstract: Elucidating the role of different degrees of freedom in a phase transition is crucial in the comprehension of complex materials. A phase transformation that attracts significant interest is the insulator-to-metal transition of Mott insulators, in which the electrons are thought to play the dominant role. Here, we use ultrafast laser spectroscopy and theoretical calculations to unveil that the correlated insulator La2CuO4, precursor to high-temperature superconductivity, is unstable toward metallization when its crystal structure is displaced along the coordinates of specific vibrational modes. This, in turn, supports the involvement of the lattice in this phase transition. Our results pave the way toward the geometrical design of metallic states in Mott insulators, with technological potential for ultrafast switching devices at room temperature.

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Language(s): eng - English
 Dates: 2019-11-082020-03-112020-03-24
 Publication Status: Published in print
 Pages: 8
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: arXiv: 2001.02624
DOI: 10.1073/pnas.1919451117
 Degree: -

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Title: Proceedings of the National Academy of Sciences of the United States of America
  Other : Proc. Acad. Sci. USA
  Other : Proc. Acad. Sci. U.S.A.
  Other : Proceedings of the National Academy of Sciences of the USA
  Abbreviation : PNAS
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Washington, D.C. : National Academy of Sciences
Pages: 8 Volume / Issue: 117 (12) Sequence Number: - Start / End Page: 6409 - 6416 Identifier: ISSN: 0027-8424
CoNE: https://pure.mpg.de/cone/journals/resource/954925427230