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Sökning: WFRF:(Tamai M) > (2015-2019) > High-Resolution Pho...

High-Resolution Photoemission on Sr2RuO4 Reveals Correlation-Enhanced Effective Spin-Orbit Coupling and Dominantly Local Self-Energies

Tamai, Anna (författare)
Department of Quantum Matter Physics, University of Geneva, Genève, Switzerland
Zingl, Manuel (författare)
Center for Computational Quantum Physics, Flatiron Institute, New York, USA
Rozbicki, E. (författare)
SUPA, School of Physics and Astronomy, University of St. Andrews, Fife, England
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Cappelli, E. (författare)
Department of Quantum Matter Physics, University of Geneva, Genève, Switzerland
Riccò, Sara (författare)
Department of Quantum Matter Physics, University of Geneva, Genève, Switzerland
de la Torre, A. (författare)
Department of Quantum Matter Physics, University of Geneva, Genève, Switzerland
McKeown Walker, Siobhan (författare)
Department of Quantum Matter Physics, University of Geneva, Genève, Switzerland
Bruno, Flavio Y. (författare)
Department of Quantum Matter Physics, University of Geneva, Genève, Switzerland
King, Phil D. C. (författare)
SUPA, School of Physics and Astronomy, University of St. Andrews, Fife, England
Meevasana, Worawat (författare)
School of Physics, Suranaree University of Technology and Synchrotron Light Research Institute,Nakhon Ratchasima, Thailand; Thailand Center of Excellence in Physics, CHE, Bangkok, Thailand
Shi, Ming (författare)
Swiss Light Source, Paul Scherrer Institut, Villigen PSI, Switzerland
Radović, Milan (författare)
Swiss Light Source, Paul Scherrer Institut, Villigen PSI, Switzerland
Plumb, Nicholas C. (författare)
Swiss Light Source, Paul Scherrer Institut, Villigen PSI, Switzerland
Gibbs, A. S. (författare)
SUPA, School of Physics and Astronomy, University of St. Andrews, Fife, England
Mackenzie, A. P. (författare)
Max Planck Institute for Chemical Physics of Solids, Dresden, Germany; SUPA, School of Physics and Astronomy, University of St. Andrews, Fife, England
Berthod, Christophe (författare)
Department of Quantum Matter Physics, University of Geneva, Geneva, Switzerland
Strand, Hugo, 1983- (författare)
Center for Computational Quantum Physics, Flatiron Institute, New York, USA
Kim, M. (författare)
Department of Physics and Astronomy, Rutgers, The State University of New Jersey, New Jersey, USA; Centre de Physique Th ́eorique, CNRS, Ecole Polytechniqu Paris, France
Georges, A. (författare)
Coll`ege de France, Paris, France; Center for Computational Quantum Physics, Flatiron Institute, New York, USA; Centre de Physique Th ́eorique, CNRS, Ecole Polytechnique, Paris, France; Department of Quantum Matter Physics, University of Geneva, Geneva, Switzerland
Baumberger, Felix (författare)
Department of Quantum Matter Physics, University of Geneva, Geneva, Switzerland; Swiss Light Source, Paul Scherrer Institut, Villigen, Switzerland
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 (creator_code:org_t)
New York : American Physical Society, 2019
2019
Engelska.
Ingår i: Physical Review X. - New York : American Physical Society. - 2160-3308. ; 9:2
Relaterad länk:
https://doi.org/10.1...
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https://urn.kb.se/re...
https://doi.org/10.1...
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  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
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  • We explore the interplay of electron-electron correlations and spin-orbit coupling in the model Fermi liquid Sr2RuO4 using laser-based angle-resolved photoemission spectroscopy. Our precise measurement of the Fermi surface confirms the importance of spin-orbit coupling in this material and reveals that its effective value is enhanced by a factor of about 2, due to electronic correlations. The self-energies for the β and γ sheets are found to display significant angular dependence. By taking into account the multi-orbital composition of quasiparticle states, we determine self-energies associated with each orbital component directly from the experimental data. This analysis demonstrates that the perceived angular dependence does not imply momentum-dependent many-body effects but arises from a substantial orbital mixing induced by spin-orbit coupling. A comparison to single-site dynamical mean-field theory further supports the notion of dominantly local orbital self-energies and provides strong evidence for an electronic origin of the observed nonlinear frequency dependence of the self-energies, leading to “kinks” in the quasiparticle dispersion of Sr2RuO4.

Ämnesord

NATURVETENSKAP  -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Condensed Matter Physics (hsv//eng)

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