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Fate of Quasiparticles at High Temperature in the Correlated Metal Sr_{2}RuO_{4}.
Hunter, A; Beck, S; Cappelli, E; Margot, F; Straub, M; Alexanian, Y; Gatti, G; Watson, M D; Kim, T K; Cacho, C; Plumb, N C; Shi, M; Radovic, M; Sokolov, D A; Mackenzie, A P; Zingl, M; Mravlje, J; Georges, A; Baumberger, F; Tamai, A.
Afiliación
  • Hunter A; Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest-Ansermet, 1211 Geneva 4, Switzerland.
  • Beck S; Center for Computational Quantum Physics, Flatiron Institute, 162 Fifth Avenue, New York, New York 10010, USA.
  • Cappelli E; Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest-Ansermet, 1211 Geneva 4, Switzerland.
  • Margot F; Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest-Ansermet, 1211 Geneva 4, Switzerland.
  • Straub M; Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest-Ansermet, 1211 Geneva 4, Switzerland.
  • Alexanian Y; Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest-Ansermet, 1211 Geneva 4, Switzerland.
  • Gatti G; Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest-Ansermet, 1211 Geneva 4, Switzerland.
  • Watson MD; Diamond Light Source, Harwell Campus, Didcot, OX11 0DE, United Kingdom.
  • Kim TK; Diamond Light Source, Harwell Campus, Didcot, OX11 0DE, United Kingdom.
  • Cacho C; Diamond Light Source, Harwell Campus, Didcot, OX11 0DE, United Kingdom.
  • Plumb NC; Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland.
  • Shi M; Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland.
  • Radovic M; Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland.
  • Sokolov DA; Max Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany.
  • Mackenzie AP; Max Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany.
  • Zingl M; Scottish Universities Physics Alliance, School of Physics and Astronomy, University of St. Andrews, St. Andrews KY16 9SS, United Kingdom.
  • Mravlje J; Center for Computational Quantum Physics, Flatiron Institute, 162 Fifth Avenue, New York, New York 10010, USA.
  • Georges A; Department of Theoretical Physics, Institute Jozef Stefan, Jamova 39, SI-1001 Ljubljana, Slovenia.
  • Baumberger F; Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, SI-1000 Ljubljana.
  • Tamai A; Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest-Ansermet, 1211 Geneva 4, Switzerland.
Phys Rev Lett ; 131(23): 236502, 2023 Dec 08.
Article en En | MEDLINE | ID: mdl-38134803
ABSTRACT
We study the temperature evolution of quasiparticles in the correlated metal Sr_{2}RuO_{4}. Our angle resolved photoemission data show that quasiparticles persist up to temperatures above 200 K, far beyond the Fermi liquid regime. Extracting the quasiparticle self-energy, we demonstrate that the quasiparticle residue Z increases with increasing temperature. Quasiparticles eventually disappear on approaching the bad metal state of Sr_{2}RuO_{4} not by losing weight but via excessive broadening from super-Planckian scattering. We further show that the Fermi surface of Sr_{2}RuO_{4}-defined as the loci where the spectral function peaks-deflates with increasing temperature. These findings are in semiquantitative agreement with dynamical mean field theory calculations.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2023 Tipo del documento: Article País de afiliación: Suiza Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2023 Tipo del documento: Article País de afiliación: Suiza Pais de publicación: Estados Unidos