Are vortex-core zero modes in FeTeSe Majorana modes
In plain words
Microscope measurements on the iron-based superconductor FeTe0.55Se0.45 find zero-energy states in some magnetic vortices but not all, and whether they are Majorana modes is debated.
Precise statement
STM on FeTe_0.55Se_0.45 and related iron-based superconductors with topological surface states shows zero-bias peaks in a fraction of vortex cores. Determine whether these are Majorana zero modes of a topological surface superconductor, accounting for Te/Se disorder, local band inversion and vortex-vortex hybridization. An answer is yes or no, with the observed fraction explained by a quantitative model.
What would settle it
Spatially resolved measurements linking zero-mode presence to local band inversion, with a conductance plateau at $2e^{2}/h$ on the zero mode.
Status in the literature
Unverified note
Topological and trivial interpretations coexist as of 2026.