Distinct reduction of Knight shift in superconducting state of Sr_{2}RuO_{4} under uniaxial strain
Shortly after the discovery of superconductivity in Sr_{2}RuO_{4}, spin-triplet pairing was proposed and further corroborated by a constant Knight shift (K) across the transition temperature (T_{c}). However, a recent experiment observed a drop in K at T_{c} which becomes larger under uniaxial strai...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2020-08-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.2.032055 |
| _version_ | 1797211278931918848 |
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| author | Austin W. Lindquist Hae-Young Kee |
| author_facet | Austin W. Lindquist Hae-Young Kee |
| author_sort | Austin W. Lindquist |
| collection | DOAJ |
| description | Shortly after the discovery of superconductivity in Sr_{2}RuO_{4}, spin-triplet pairing was proposed and further corroborated by a constant Knight shift (K) across the transition temperature (T_{c}). However, a recent experiment observed a drop in K at T_{c} which becomes larger under uniaxial strain, ruling out several spin-triplet scenarios. Here we show that even parity interorbital spin-triplet pairing can feature a d vector that rotates when uniaxial strain is applied, leading to a larger drop in the spin polarization perpendicular to the strain direction, distinct from spin-singlet pairing. We propose that anisotropic spin polarization under strain will ultimately differentiate triplet versus singlet pairing. |
| first_indexed | 2024-04-24T10:23:57Z |
| format | Article |
| id | doaj.art-95ea7f3a7e2641b688737333af2f0d93 |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:23:57Z |
| publishDate | 2020-08-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-95ea7f3a7e2641b688737333af2f0d932024-04-12T16:59:47ZengAmerican Physical SocietyPhysical Review Research2643-15642020-08-012303205510.1103/PhysRevResearch.2.032055Distinct reduction of Knight shift in superconducting state of Sr_{2}RuO_{4} under uniaxial strainAustin W. LindquistHae-Young KeeShortly after the discovery of superconductivity in Sr_{2}RuO_{4}, spin-triplet pairing was proposed and further corroborated by a constant Knight shift (K) across the transition temperature (T_{c}). However, a recent experiment observed a drop in K at T_{c} which becomes larger under uniaxial strain, ruling out several spin-triplet scenarios. Here we show that even parity interorbital spin-triplet pairing can feature a d vector that rotates when uniaxial strain is applied, leading to a larger drop in the spin polarization perpendicular to the strain direction, distinct from spin-singlet pairing. We propose that anisotropic spin polarization under strain will ultimately differentiate triplet versus singlet pairing.http://doi.org/10.1103/PhysRevResearch.2.032055 |
| spellingShingle | Austin W. Lindquist Hae-Young Kee Distinct reduction of Knight shift in superconducting state of Sr_{2}RuO_{4} under uniaxial strain Physical Review Research |
| title | Distinct reduction of Knight shift in superconducting state of Sr_{2}RuO_{4} under uniaxial strain |
| title_full | Distinct reduction of Knight shift in superconducting state of Sr_{2}RuO_{4} under uniaxial strain |
| title_fullStr | Distinct reduction of Knight shift in superconducting state of Sr_{2}RuO_{4} under uniaxial strain |
| title_full_unstemmed | Distinct reduction of Knight shift in superconducting state of Sr_{2}RuO_{4} under uniaxial strain |
| title_short | Distinct reduction of Knight shift in superconducting state of Sr_{2}RuO_{4} under uniaxial strain |
| title_sort | distinct reduction of knight shift in superconducting state of sr 2 ruo 4 under uniaxial strain |
| url | http://doi.org/10.1103/PhysRevResearch.2.032055 |
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