Distrontium ruthenate: Difference between revisions

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T_c seems to increase under uniaxial compression<ref>{{cite journal|last1=Steppke|first1=Alexander|last2=Zhao|first2=Lishan|last3=Barber|first3=Mark E.|last4=Scaffidi|first4=Thomas|last5=Jerzembeck|first5=Fabian|last6=Rosner|first6=Helge|last7=Gibbs|first7=Alexandra S.|last8=Maeno|first8=Yoshiteru|last9=Simon|first9=Steven H.|last10=Mackenzie|first10=Andrew P.|last11=Hicks|first11=Clifford W.|date=2017-01-12|title=Strong peak in T_c of Sr₂RuO₄ under uniaxial pressure|url=http://pure-oai.bham.ac.uk/ws/files/102786770/Hicks_2017_Science.pdf|journal=Science|publisher=American Association for the Advancement of Science (AAAS)|volume=355|issue=6321|page=eaaf9398|doi=10.1126/science.aaf9398|issn=0036-8075|pmid=28082534|hdl-access=free|hdl=10023/10113|s2cid=8197509}}</ref> that pushes the [[van Hove singularity]] of the d_xy orbital across the Fermi level.<ref>{{Cite journal|last1=Sunko|first1=Veronika|last2=Abarca Morales|first2=Edgar|last3=Marković|first3=Igor|last4=Barber|first4=Mark E.|last5=Milosavljević|first5=Dijana|last6=Mazzola|first6=Federico|last7=Sokolov|first7=Dmitry A.|last8=Kikugawa|first8=Naoki|last9=Cacho|first9=Cephise|last10=Dudin|first10=Pavel|last11=Rosner|first11=Helge|date=2019-08-19|title=Direct observation of a uniaxial stress-driven Lifshitz transition in Sr₂RuO₄|url=https://www.nature.com/articles/s41535-019-0185-9|journal=npj Quantum Materials|language=en|volume=4|issue=1|page=46|doi=10.1038/s41535-019-0185-9 | arxiv=1903.09581 |bibcode=2019npjQM...4...46S|s2cid=85459284|issn=2397-4648}}</ref>

Evidence was reported for ''p''-wave singlet state as in cuprates and conventional superconductors, instead of the conjectured more unconventional ''p''-wave [[triplet state]].<ref>{{Cite journal|last1=Chronister|first1=Aaron|last2=Pustogow|first2=Andrej|last3=Kikugawa|first3=Naoki|last4=Sokolov|first4=Dmitry A.|last5=Jerzembeck|first5=Fabian|last6=Hicks|first6=Clifford W.|last7=Mackenzie|first7=Andrew P.|last8=Bauer|first8=Eric D.|last9=Brown|first9=Stuart E.|date=2021-06-22|title=Evidence for even parity unconventional superconductivity in Sr₂RuO₄|journal=Proceedings of the National Academy of Sciences|language=en|volume=118|issue=25|doi=10.1073/pnas.2025313118 |pmc=8237678|issn=0027-8424|pmid=34161272|arxiv=2007.13730|bibcode=2021PNAS..11825313C|doi-access=free }}</ref><ref>{{Cite journal|last=Lopatka|first=Alex|date=2021-08-05|title=An unconventional superconductor isn't so odd after all|journal=Physics Today|volume=2021|issue=1 |pages=0805a|url=https://physicstoday.scitation.org/do/10.1063/PT.6.1.20210805a/abs/|language=en|doi=10.1063/PT.6.1.20210805a|bibcode=2021PhT..2021a.805. |s2cid=241654779|url-access=subscription}}</ref> It has also been suggested that Strontium ruthenate superconductivity could be due to a [[Fulde–Ferrell–Larkin–Ovchinnikov phase]].<ref>{{Cite journal |last1=Kinjo |first1=K. |last2=Manago |first2=M. |last3=Kitagawa |first3=S. |last4=Mao |first4=Z. Q. |last5=Yonezawa |first5=S. |last6=Maeno |first6=Y. |last7=Ishida |first7=K. |date=2022-04-22 |title=Superconducting spin smecticity evidencing the Fulde-Ferrell-Larkin-Ovchinnikov state in Sr 2 RuO 4 |url=https://www.science.org/doi/10.1126/science.abb0332 |journal=Science |language=en |volume=376 |issue=6591 |pages=397–400 |doi=10.1126/science.abb0332 |pmid=35446631 |bibcode=2022Sci...376..397K |s2cid=248322696 |issn=0036-8075|url-access=subscription }}</ref><ref>{{Cite journal |date=2022-06-13 |title=Magnetic field induces spatially varying superconductivity |url=https://physicstoday.scitation.org/do/10.1063/PT.6.1.20220613a/full |journal=Physics Today |language=en |volume=2022 |issue=1 |pages=0613a |doi=10.1063/PT.6.1.20220613a|bibcode=2022PhT..2022a.613. |s2cid=249659408 |last1=Hill |first1=Heather M. |url-access=subscription }}</ref>

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 Sr₂RuO₄|year=2000|publisher=University of Illinois at Urbana-Champaign|url=http://groups.mrl.uiuc.edu/dvh/theses/yanoff.pdf|access-date=2012-04-16|archive-date=2012-09-16|archive-url=https://web.archive.org/web/20120916164016/http://groups.mrl.uiuc.edu/dvh/theses/yanoff.pdf|url-status=dead}}</ref>

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== See also ==

* [[Uranium ditelluride]] and [[Dicalsium Ruthenate]].

* [[Dicalcium ruthenate]]

==References==