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Electron-momentum dependence of electron-phonon coupling underlies dramatic phonon renormalization in YNi2B2C

Authors
  • Kurzhals, Philipp1
  • Kremer, Geoffroy2
  • Jaouen, Thomas2, 3
  • Nicholson, Christopher W.2
  • Heid, Rolf1
  • Nagel, Peter1
  • Castellan, John-Paul1, 4
  • Ivanov, Alexandre5
  • Muntwiler, Matthias6
  • Rumo, Maxime2
  • Salzmann, Bjoern2
  • Strocov, Vladimir N.6
  • Reznik, Dmitry7, 7
  • Monney, Claude2
  • Weber, Frank1
  • 1 Karlsruhe Institute of Technology, Karlsruhe, 76021, Germany , Karlsruhe (Germany)
  • 2 Université de Fribourg, Fribourg, 1700, Switzerland , Fribourg (Switzerland)
  • 3 IPR (Institut de Physique de Rennes) - UMR 6251, Rennes, F-35000, France , Rennes (France)
  • 4 CEA Saclay, Gif-sur-Yvette, F-91911, France , Gif-sur-Yvette (France)
  • 5 Institut Laue-Langevin, 71 avenue des Martyrs CS 20156, Grenoble Cedex 9, 38042, France , Grenoble Cedex 9 (France)
  • 6 Swiss Light Source, Villigen PSI, 5232, Switzerland , Villigen PSI (Switzerland)
  • 7 University of Colorado at Boulder, Boulder, CO, 80309, USA , Boulder (United States)
Type
Published Article
Journal
Nature Communications
Publisher
Springer Nature
Publication Date
Jan 11, 2022
Volume
13
Issue
1
Identifiers
DOI: 10.1038/s41467-021-27843-y
Source
Springer Nature
Disciplines
  • article
License
Green

Abstract

Phonon anomalies are commonly attributed to Fermi-surface nesting or phonon anharmonicity, but these mechanisms do not apply in all cases. Here, the authors propose a new mechanism based on electron-momentum-dependent electron-phonon coupling in the case of YNi2B2C, that could also apply to other materials.

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