The authors report superconducting topological surface states (TSS) on MBE-grown Fe(Te,Se) films by high-resolution laser-ARPES. Near the FeTe limit, the surface state disappears due to an electron-correlation-driven topological transition associated with decoherence of the dxy-orbital-derived bands.
- Haoran Lin
- Christopher L. Jacobs
- Shuolong Yang