Effect of the RuO6 octahedron rotation at the Sr2RuO4 surface on topological property

  title={Effect of the RuO6 octahedron rotation at the Sr2RuO4 surface on topological property},
  author={Yoshiki Imai and Katsunori Wakabayashi and Manfred Sigrist},
  journal={arXiv: Superconductivity},
We investigate the rotation effect of the RuO$_6$ octahedron around the $c$ axis on the topological and transport properties near the surface of the spin-triplet superconductor Sr$_2$RuO$_4$. While the Fermi level of bulk Sr$_2$RuO$_4$ is near the Lifshitz transition, the RuO$_6$ rotation realized near the surface leads to the change of the Fermi surface topology. The edge current resulting from the time-reversal symmetry breaking in the chiral $p$-wave phase with fully opened excitation gap is… 
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