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  The superconductivity of Sr2RuO4 under c-axis uniaxial stress

Jerzembeck, F., Røising, H. S., Steppke, A., Rosner, H., Sokolov, D. A., Kikugawa, N., et al. (2022). The superconductivity of Sr2RuO4 under c-axis uniaxial stress. Nature Communications, 13(1): 4596, pp. 1-11. doi:10.1038/s41467-022-32177-4.

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 Creators:
Jerzembeck, Fabian1, Author           
Røising, Henrik S.2, Author
Steppke, Alexander1, Author           
Rosner, Helge1, Author           
Sokolov, Dmitry A.1, Author           
Kikugawa, Naoki2, Author
Scaffidi, Thomas2, Author
Simon, Steven H.2, Author
Mackenzie, Andrew P.3, Author           
Hicks, Clifford W.4, Author           
Affiliations:
1Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              
2External Organizations, ou_persistent22              
3Andrew Mackenzie, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863463              
4Clifford Hicks, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863466              

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Free keywords: article, calculation, physiological stress, superconductivity
 Abstract: Applying in-plane uniaxial pressure to strongly correlated low-dimensional systems has been shown to tune the electronic structure dramatically. For example, the unconventional superconductor Sr2RuO4 can be tuned through a single Van Hove point, resulting in strong enhancement of both Tc and Hc2. Out-of-plane (c axis) uniaxial pressure is expected to tune the quasi-two-dimensional structure even more strongly, by pushing it towards two Van Hove points simultaneously. Here, we achieve a record uniaxial stress of 3.2 GPa along the c axis of Sr2RuO4. Hc2 increases, as expected for increasing density of states, but unexpectedly Tc falls. As a first attempt to explain this result, we present three-dimensional calculations in the weak interaction limit. We find that within the weak-coupling framework there is no single order parameter that can account for the contrasting effects of in-plane versus c-axis uniaxial stress, which makes this new result a strong constraint on theories of the superconductivity of Sr2RuO4. © 2022, The Author(s).

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Language(s): eng - English
 Dates: 2022-08-062022-08-06
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1038/s41467-022-32177-4
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Title: Nature Communications
  Abbreviation : Nat. Commun.
Source Genre: Journal
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Publ. Info: London : Nature Publishing Group
Pages: - Volume / Issue: 13 (1) Sequence Number: 4596 Start / End Page: 1 - 11 Identifier: ISSN: 2041-1723
CoNE: https://pure.mpg.de/cone/journals/resource/2041-1723