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  Competition between d-wave superconductivity and magnetism in uniaxially strained Sr2RuO4

Profe, J. B., Beck, S., Kennes, D. M., Georges, A., & Gingras, O. (2024). Competition between d-wave superconductivity and magnetism in uniaxially strained Sr2RuO4. npj Quantum Materials, 9(1): 53. doi:10.1038/s41535-024-00661-3.

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Item Permalink: https://hdl.handle.net/21.11116/0000-000D-79F2-A Version Permalink: https://hdl.handle.net/21.11116/0000-000F-8FDA-B
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 Creators:
Profe, J. B.1, 2, Author
Beck, S.2, Author
Kennes, D. M.1, 3, 4, Author           
Georges, A.2, 5, 6, 7, Author
Gingras, O.2, Author
Affiliations:
1Institute for Theoretical Solid State Physics, RWTH Aachen University and JARA Fundamentals of Future Information, ou_persistent22              
2Center for Computational Quantum Physics, Flatiron Institute, ou_persistent22              
3Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266715              
4Center Free-Electron Laser Science, ou_persistent22              
5Collège de France, Université PSL, ou_persistent22              
6Centre de Physique Théorique, Ecole Polytechnique, CNRS, Institut Polytechnique de Paris, ou_persistent22              
7DQMP, Université de Genève, ou_persistent22              

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 Abstract: The pairing symmetry of Sr2RuO4 is a long-standing fundamental question in the physics of superconducting materials with strong electronic correlations. We use the functional renormalization group to investigate the behavior of superconductivity under uniaxial strain in a two-dimensional realistic model of Sr2RuO4 obtained with density functional theory and incorporating the effect of spin-orbit coupling. We find a dominant dx2-y2 superconductor mostly hosted by the dxy-orbital, with no other closely competing superconducting state. Within this framework, we reproduce the experimentally observed enhancement of the critical temperature under strain and propose a simple mechanism driven by the density of states to explain our findings. We also investigate the competition between superconductivity and spin-density wave ordering as a function of interaction strength. By comparing theory and experiment, we discuss constraints on a possible degenerate partner of the dx2-y2 superconducting state.

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Language(s): eng - English
 Dates: 2023-07-192024-06-052024-07-09
 Publication Status: Published online
 Pages: -
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: arXiv: 2307.10006
DOI: 10.1038/s41535-024-00661-3
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Project name : JBP thanks Prof. E. Pavarini, Friedrich Krien, Lennart Klebl, and Jacob Beyer for the helpful discussion. The authors gratefully acknowledge the computing time granted through JARA on the supercomputer JURECA129 at Forschungszentrum Jülich. JBP and DMK are supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under RTG 1995, within the Priority Program SPP 2244 “2DMP”—443273985 and under Germany’s Excellence Strategy—Cluster of Excellence Matter and Light for Quantum Computing (ML4Q) EXC 2004/1—390534769. The Flatiron Institute is a division of the Simons Foundation. Open Access funding enabled and organized by Projekt DEAL.
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Title: npj Quantum Materials
  Other : npj Quantum Mater.
Source Genre: Journal
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Publ. Info: [London] : Nature Publishing Group
Pages: - Volume / Issue: 9 (1) Sequence Number: 53 Start / End Page: - Identifier: ISSN: 2397-4648
CoNE: https://pure.mpg.de/cone/journals/resource/2397-4648