Journal
PHYSICAL REVIEW RESEARCH
Volume 2, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevResearch.2.032055
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Funding
- Natural Sciences and Engineering Research Council of Canada [2016-06089]
- Center for Quantum Materials at the University of Toronto
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Shortly after the discovery of superconductivity in Sr2RuO4, 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.
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