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VOLUME 116 | ISSUE 11 | PAGE 808
Emerging edge states in the monolayer FeSe superconductor with the spin-orbital coupling
Previously, the monolayer FeSe superconductor can be described qualitatively based on a two-orbital model. We here proposed theoretically that the edge states and vortex induced zero modes may emerge in the monolayer FeSe superconductor based on this effective two-orbital model with an additional spin-orbital coupling. However, we also verified numerically that this system is still topologically trivial based on the calculation of the topological invariant and the Wilson loop technique. The edge states will disappear when the hole Fermi pockets around the Γ point emerge upon changing the chemical potential.