The superconductivity of Sr2RuO4 under c-axis uniaxial stress
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. Ou...
| Main Authors: | , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
Springer Nature
2022
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| _version_ | 1797107446506848256 |
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| author | Jerzembeck, F Røising, HS Steppke, A Rosner, H Sokolov, DA Kikugawa,, N Scaffidi, T Simon, SH Mackenzie, AP Hicks, CW |
| author_facet | Jerzembeck, F Røising, HS Steppke, A Rosner, H Sokolov, DA Kikugawa,, N Scaffidi, T Simon, SH Mackenzie, AP Hicks, CW |
| author_sort | Jerzembeck, F |
| collection | OXFORD |
| description | 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. |
| first_indexed | 2024-03-07T07:14:42Z |
| format | Journal article |
| id | oxford-uuid:08764c71-abce-44f8-9e0b-422e418c93f7 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T07:14:42Z |
| publishDate | 2022 |
| publisher | Springer Nature |
| record_format | dspace |
| spelling | oxford-uuid:08764c71-abce-44f8-9e0b-422e418c93f72022-08-09T12:54:22ZThe superconductivity of Sr2RuO4 under c-axis uniaxial stressJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:08764c71-abce-44f8-9e0b-422e418c93f7EnglishSymplectic ElementsSpringer Nature2022Jerzembeck, FRøising, HSSteppke, ARosner, HSokolov, DAKikugawa,, NScaffidi, TSimon, SHMackenzie, APHicks, CWApplying 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. |
| spellingShingle | Jerzembeck, F Røising, HS Steppke, A Rosner, H Sokolov, DA Kikugawa,, N Scaffidi, T Simon, SH Mackenzie, AP Hicks, CW The superconductivity of Sr2RuO4 under c-axis uniaxial stress |
| title | The superconductivity of Sr2RuO4 under c-axis uniaxial stress |
| title_full | The superconductivity of Sr2RuO4 under c-axis uniaxial stress |
| title_fullStr | The superconductivity of Sr2RuO4 under c-axis uniaxial stress |
| title_full_unstemmed | The superconductivity of Sr2RuO4 under c-axis uniaxial stress |
| title_short | The superconductivity of Sr2RuO4 under c-axis uniaxial stress |
| title_sort | superconductivity of sr2ruo4 under c axis uniaxial stress |
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