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  Direct determination of mode-projected electron-phonon coupling in the time domain

Na, M. X., Mills, A. K., Boschini, F., Michiardi, M., Nosarzewski, B., Day, R. P., et al. (2019). Direct determination of mode-projected electron-phonon coupling in the time domain. Science, 366, 1231-1236. doi:10.1126/science.aaw1662.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-6919-A Version Permalink: http://hdl.handle.net/21.11116/0000-0005-691D-6
Genre: Journal Article

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 Creators:
Na, M. X.1, Author
Mills, A. K.1, Author
Boschini, F.1, Author
Michiardi, M.2, Author              
Nosarzewski, B.1, Author
Day, R. P.1, Author
Razzoli, E.1, Author
Sheyerman, A.1, Author
Schneider, M.1, Author
Levy, G.1, Author
Zhdanovich, S.1, Author
Devereaux, T. P.1, Author
Kemper, A. F.1, Author
Jones, D. J.1, Author
Damascelli, A.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863445              

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 Abstract: Ultrafast spectroscopies have become an important tool for elucidating the microscopic description and dynamical properties of quantum materials. In particular, by tracking the dynamics of nonthermal electrons, a material's dominant scattering processes can be revealed. Here, we present a method for extracting the electron-phonon coupling strength in the time domain, using timeand angle-resolved photoemission spectroscopy (TR-ARPES). This method is demonstrated in graphite, where we investigate the dynamics of photoinjected electrons at the K point, detecting quantized energy-loss processes that correspond to the emission of strongly coupled optical phonons. We show that the observed characteristic time scale for spectral weight transfer mediated by phonon-scattering processes allows for the direct quantitative extraction of electron-phonon matrix elements for specific modes. Copyright © 2019 The Authors.

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Language(s): eng - English
 Dates: 2019-12-062019-12-06
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1126/science.aaw1662
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Title: Science
  Other : Science
Source Genre: Journal
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Publ. Info: Washington, D.C. : American Association for the Advancement of Science
Pages: - Volume / Issue: 366 Sequence Number: - Start / End Page: 1231 - 1236 Identifier: ISSN: 0036-8075
CoNE: https://pure.mpg.de/cone/journals/resource/991042748276600_1