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  • Tamai, AnnaDepartment of Quantum Matter Physics, University of Geneva, Genève, Switzerland (author)

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

  • Article/chapterEnglish2019

Publisher, publication year, extent ...

  • New York :American Physical Society,2019
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:oru-89360
  • https://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-89360URI
  • https://doi.org/10.1103/PhysRevX.9.021048DOI

Supplementary language notes

  • Language:English
  • Summary in:English

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Classification

  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • Funding Agencies:Scottish Funding Council  Engineering & Physical Sciences Research Council (EPSRC) Swiss National Science Foundation (SNSF) European Research Council (ERC) ERC-319286-QMACSNSF (NCCR MARVEL)  
  • 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.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Zingl, ManuelCenter for Computational Quantum Physics, Flatiron Institute, New York, USA (author)
  • Rozbicki, E.SUPA, School of Physics and Astronomy, University of St. Andrews, Fife, England (author)
  • Cappelli, E.Department of Quantum Matter Physics, University of Geneva, Genève, Switzerland (author)
  • Riccò, SaraDepartment of Quantum Matter Physics, University of Geneva, Genève, Switzerland (author)
  • de la Torre, A.Department of Quantum Matter Physics, University of Geneva, Genève, Switzerland (author)
  • McKeown Walker, SiobhanDepartment of Quantum Matter Physics, University of Geneva, Genève, Switzerland (author)
  • Bruno, Flavio Y.Department of Quantum Matter Physics, University of Geneva, Genève, Switzerland (author)
  • King, Phil D. C.SUPA, School of Physics and Astronomy, University of St. Andrews, Fife, England (author)
  • Meevasana, WorawatSchool of Physics, Suranaree University of Technology and Synchrotron Light Research Institute,Nakhon Ratchasima, Thailand; Thailand Center of Excellence in Physics, CHE, Bangkok, Thailand (author)
  • Shi, MingSwiss Light Source, Paul Scherrer Institut, Villigen PSI, Switzerland (author)
  • Radović, MilanSwiss Light Source, Paul Scherrer Institut, Villigen PSI, Switzerland (author)
  • Plumb, Nicholas C.Swiss Light Source, Paul Scherrer Institut, Villigen PSI, Switzerland (author)
  • Gibbs, A. S.SUPA, School of Physics and Astronomy, University of St. Andrews, Fife, England (author)
  • Mackenzie, A. P.Max Planck Institute for Chemical Physics of Solids, Dresden, Germany; SUPA, School of Physics and Astronomy, University of St. Andrews, Fife, England (author)
  • Berthod, ChristopheDepartment of Quantum Matter Physics, University of Geneva, Geneva, Switzerland (author)
  • Strand, Hugo,1983-Center for Computational Quantum Physics, Flatiron Institute, New York, USA(Swepub:oru)hosd (author)
  • Kim, M.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 (author)
  • Georges, A.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 (author)
  • Baumberger, FelixDepartment of Quantum Matter Physics, University of Geneva, Geneva, Switzerland; Swiss Light Source, Paul Scherrer Institut, Villigen, Switzerland (author)
  • Department of Quantum Matter Physics, University of Geneva, Genève, SwitzerlandCenter for Computational Quantum Physics, Flatiron Institute, New York, USA (creator_code:org_t)

Related titles

  • In:Physical Review XNew York : American Physical Society9:22160-3308

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