Topological ultranodal pair states in iron-based superconductors
oleh: Chandan Setty, Shinibali Bhattacharyya, Yifu Cao, Andreas Kreisel, P. J. Hirschfeld
| Format: | Article |
|---|---|
| Diterbitkan: | Nature Portfolio 2020-01-01 |
Deskripsi
Experiments indicate an abrupt change in the pairing gap near the nematic transition in the FeSe1−x S x iron-based superconductor. Here, Setty et al. propose to explain them via a novel spin-1/2 paired state with topologically protected zero-energy excitations over a finite area nodal surface.