Helical Hinge Majorana Modes in Iron-Based Superconductors
Rui-Xing Zhang, William S. Cole, S. Das Sarma
DOI 10.1103/PhysRevLett.122.187001 · Physical Review Letters
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
Motivated by recent experiments on FeTe1−xSex, we construct an explicit minimal model of an iron-based superconductor with band inversion at the Z point and nontopological bulk s± pairing. While there has been considerable interest in Majorana zero modes localized at vortices in such systems, we find that our model—without any vortices—intrinsically supports 1D helical Majorana modes localized at the hinges between (001) and (100) or (010) surfaces, suggesting that this is a viable platform for observing “higher-order” topological superconductivity. We provide a general theory for these hinge modes and discuss their stability and experimental manifestation. Our work indicates the possible experimental observability of hinge Majorana modes in iron-based topological superconductors.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| FeTe1-xSex Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 14.5 | Pressure not reported | onset |
| FeTe1-xSex Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 14.5 | Pressure not reported | onset |
Similar papers
Superconducting proximity effect in a topological insulator using Fe(Te, Se)
similarity 0.94He Zhao et al.
Source status unknown — claims are unverified
Importance of the Fermi surface and magnetic interactions for the superconducting dome in electron-doped FeSe intercalates
similarity 0.94Makoto Shimizu et al.
Source status unknown — claims are unverified
Bulk superconductivity in FeTe1−xSex via physicochemical pumping of excess iron
similarity 0.93Lianyang Dong et al.
Source status unknown — claims are unverified
Universal 2Δmax/kBTc scaling decoupled from the electronic coherence in iron-based superconductors
similarity 0.93H. Miao et al.
Source status unknown — claims are unverified
Fermi Arc Criterion for Surface Majorana Modes in Superconducting Time-Reversal Symmetric Weyl Semimetals
similarity 0.93Rauf Giwa & Pavan Hosur
Source status unknown — claims are unverified
Macroscopic physical properties and spin dynamics in the layered superconductor Fe1+δTe1−xSex
similarity 0.93Chishiro Michioka et al.
Source status unknown — claims are unverified