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High-Resolution Pho...
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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
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New York :American Physical Society,2019
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Numbers
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LIBRIS-ID:oai:DiVA.org:oru-89360
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https://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-89360URI
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https://doi.org/10.1103/PhysRevX.9.021048DOI
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
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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)
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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.
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Zingl, ManuelCenter for Computational Quantum Physics, Flatiron Institute, New York, USA
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Rozbicki, E.SUPA, School of Physics and Astronomy, University of St. Andrews, Fife, England
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Cappelli, E.Department of Quantum Matter Physics, University of Geneva, Genève, Switzerland
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Riccò, SaraDepartment of Quantum Matter Physics, University of Geneva, Genève, Switzerland
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de la Torre, A.Department of Quantum Matter Physics, University of Geneva, Genève, Switzerland
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McKeown Walker, SiobhanDepartment of Quantum Matter Physics, University of Geneva, Genève, Switzerland
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Bruno, Flavio Y.Department of Quantum Matter Physics, University of Geneva, Genève, Switzerland
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King, Phil D. C.SUPA, School of Physics and Astronomy, University of St. Andrews, Fife, England
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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
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Shi, MingSwiss Light Source, Paul Scherrer Institut, Villigen PSI, Switzerland
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Radović, MilanSwiss Light Source, Paul Scherrer Institut, Villigen PSI, Switzerland
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Plumb, Nicholas C.Swiss Light Source, Paul Scherrer Institut, Villigen PSI, Switzerland
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Gibbs, A. S.SUPA, School of Physics and Astronomy, University of St. Andrews, Fife, England
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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
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Berthod, ChristopheDepartment of Quantum Matter Physics, University of Geneva, Geneva, Switzerland
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Strand, Hugo,1983-Center for Computational Quantum Physics, Flatiron Institute, New York, USA(Swepub:oru)hosd
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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
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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)
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Baumberger, FelixDepartment of Quantum Matter Physics, University of Geneva, Geneva, Switzerland; Swiss Light Source, Paul Scherrer Institut, Villigen, Switzerland
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Department of Quantum Matter Physics, University of Geneva, Genève, SwitzerlandCenter for Computational Quantum Physics, Flatiron Institute, New York, USA
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In:Physical Review XNew York : American Physical Society9:22160-3308
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Tamai, Anna
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Zingl, Manuel
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Rozbicki, E.
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Cappelli, E.
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Riccò, Sara
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de la Torre, A.
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McKeown Walker, ...
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Bruno, Flavio Y.
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King, Phil D. C.
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Meevasana, Woraw ...
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Shi, Ming
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Radović, Milan
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Plumb, Nicholas ...
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Gibbs, A. S.
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Mackenzie, A. P.
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Berthod, Christo ...
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Strand, Hugo, 19 ...
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Kim, M.
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Georges, A.
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Baumberger, Feli ...
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