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Strontium ruthenate behaves as a conventional [[Fermi liquid]] at temperatures below 25 K.<ref>{{cite book|last=Yanoff|first=Brian|title=Temperature dependence of the penetration depth in the unconventional superconductor Sr<sub>2</sub>RuO<sub>4</sub>|year=2000|publisher=University of Illinois at Urbana-Champaign|url=http://groups.mrl.uiuc.edu/dvh/theses/yanoff.pdf}}</ref>
In [[2023]], a team of researchers from the [[University of Illinois Urbana-Champaign]] observed a [[David Pines|Pines' demon]], or ''acoustic plasmon'' in Sr<sub>2</sub>RuO<sub>4</sub>.<ref>{{cite journal |last1=Abbamonte |first1=Peter |title=Pines’ demon observed as a 3D acoustic plasmon in Sr2RuO4 |journal=[[Nature (journal)|Nature]] |date=August 9, 2023 |volume=45 |doi=10.1038/s41586-023-06318-8 |url=https://www.nature.com/articles/s41586-023-06318-8 |access-date=August 10, 2023}}</ref>
== See also ==
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