Spinor pairing order enforced by Berry phase
Abstract
We introduce a class of topological pairing orders characterized by a half-integer pair monopole charge, leading to Berry phase enforced half-integer partial wave symmetry. This exotic spinor pairing order can emerge from pairing between Fermi surfaces with Chern numbers differing by an odd integer. Using tight-binding models, we demonstrate spinor superconducting orders with monopole charges ± 1 / 2 , featuring a single gap node and nontrivial surface states. Additionally, the superfluid velocity follows a fractionalized Mermin-Ho relation in spatially inhomogeneous pairing orders. The concept extends to spinor density waves and excitons.
Fields of Study & Subjects
Synthesis and Properties of Aromatic Compounds
Finite Group Theory Research
Graphene research and applications
Publication details
- Journal / source
- Physical Review Research
- Publisher
- American Physical Society (APS)
- Volume
- 8
- Issue
- 2
- Publication date
- 25 April 2026
- Language
- EN