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Interorbital single...
Interorbital singlet pairing in Sr2RuO4 : A Hund's superconductor
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- Käser, Stefan (författare)
- Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany; Department of Physics, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, Germany,Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG),Friedrich-Alexander-Universität Erlangen Nurnberg (FAU)
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- Strand, Hugo U. R., 1983- (författare)
- Department of Physics, Chalmers University of Technology, Gothenburg, Sweden; Center for Computational Quantum Physics, Flatiron Institute, Simons Foundation, New York NY, USA,Örebro universitet,Örebro University,Flatiron Institute,Chalmers tekniska högskola,Chalmers University of Technology
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- Wentzell, Nils (författare)
- Center for Computational Quantum Physics, Flatiron Institute, Simons Foundation, New York NY, USA,Flatiron Institute
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- Georges, Antoine (författare)
- Center for Computational Quantum Physics, Flatiron Institute, Simons Foundation, New York NY, USA; Collège de France, Paris, France; CPHT, CNRS, Ecole Polytechnique, IP Paris, Palaiseau, France; DQMP, Université de Genève, Geneva, Switzerland,École polytechnique,Université de Genève,University of Geneva,Collège de France,Flatiron Institute
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- Parcollet, Olivier (författare)
- Center for Computational Quantum Physics, Flatiron Institute, Simons Foundation, New York NY, USA; Université Paris-Saclay, CNRS, CEA, Institut de Physique Théorique, Gif-sur-Yvette, France,Université Paris-Saclay,University Paris-Saclay,Flatiron Institute
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- Hansmann, Philipp (författare)
- Max-Planck-Institut für Chemische Physik fester Stoffe, Dresden, Germany; Department of Physics, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, Germany,Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG),Friedrich-Alexander-Universität Erlangen Nurnberg (FAU)
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Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany; Department of Physics, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, Germany Max Planck Gesellschaft zur Förderung der Wissenschaften eV. (MPG) (creator_code:org_t)
- American Physical Society, 2022
- 2022
- Engelska.
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Ingår i: Physical Review B. - : American Physical Society. - 2469-9950 .- 2469-9969. ; 105:15
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https://doi.org/10.1...
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https://research.cha... (primary) (free)
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Abstract
Ämnesord
Stäng
- We study the superconducting gap function of Sr2RuO4. By solving the linearized Eliashberg equation with a correlated pairing vertex extracted from a dynamical mean-field calculation we identify the dominant pairing channels. An analysis of the candidate gap functions in orbital and quasiparticle band basis reveals that an interorbital singlet pairing of even parity is in agreement with experimental observations. It reconciles in particular the occurrence of a two-component order parameter with the presence of line nodes of quasiparticles along the c axis in the superconducting phase. The strong angular dependence of the gap along the Fermi surface is in stark contrast to its quasilocality when expressed in the orbital basis. We identify local interorbital spin correlations as the driving force for the pairing and thus reveal the continuation of Hund's physics into the superconducting phase.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
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