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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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Jerzembeck, Fabian1, Autor           
Røising, Henrik S.2, Autor
Steppke, Alexander1, Autor           
Rosner, Helge1, Autor           
Sokolov, Dmitry A.1, Autor           
Kikugawa, Naoki2, Autor
Scaffidi, Thomas2, Autor
Simon, Steven H.2, Autor
Mackenzie, Andrew P.3, Autor           
Hicks, Clifford W.4, Autor           
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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Schlagwörter: article, calculation, physiological stress, superconductivity
 Zusammenfassung: 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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Sprache(n): eng - English
 Datum: 2022-08-062022-08-06
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: DOI: 10.1038/s41467-022-32177-4
 Art des Abschluß: -

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Titel: Nature Communications
  Kurztitel : Nat. Commun.
Genre der Quelle: Zeitschrift
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Affiliations:
Ort, Verlag, Ausgabe: London : Nature Publishing Group
Seiten: - Band / Heft: 13 (1) Artikelnummer: 4596 Start- / Endseite: 1 - 11 Identifikator: ISSN: 2041-1723
CoNE: https://pure.mpg.de/cone/journals/resource/2041-1723