Strain-induced time reversal breaking and half quantum vortices near a putative superconducting tetra-critical point in Sr$_2$RuO$_4$

@inproceedings{Yuan2021StraininducedTR,
  title={Strain-induced time reversal breaking and half quantum vortices near a putative superconducting tetra-critical point in Sr\$\_2\$RuO\$\_4\$},
  author={Andrew C. Yuan and Erez Berg and Steven A. Kivelson},
  year={2021}
}
It has been shown [1] that many seemingly contradictory experimental findings concerning the superconducting state in Sr2RuO4 can be accounted for as resulting from the existence of an assumed tetra-critical point at near ambient pressure at which dx2−y2 and gxy(x2−y2) superconducting states are degenerate. We perform both a Landau-Ginzburg and a microscopic mean-field analysis of the effect of spatially varying strain on such a state. In the presence of finite xy shear strain, the… 
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