Time-reversal-invariant topological superconductivity in n-doped BiH

TL;DR

This paper predicts that electron-doped BiH, a hydrogenated bilayer bismuth, could be the first experimentally confirmed example of a time-reversal-invariant topological superconductor, advancing understanding of topological states.

Contribution

It proposes that electron doping of BiH can realize the first known time-reversal-invariant topological superconductor, filling a significant gap in condensed matter physics.

Findings

BiH can exhibit topological superconductivity upon doping

Predicted topological phase is protected by time-reversal symmetry

Potential for experimental realization and verification

Abstract

Intrinsic and symmetry protected topological states have attracted lots of interest in condensed matter physics recently. In particular, time reversal symmetry protected fermion topological insulators have been theoretically predicted and experimentally verified. However despite considerable experimental and theoretical works, definitive evidence for time reversal invariant topological superconductivity is still lacking. Here we propose that upon electron doping the hydrogenated single bilayer Bi, namely BiH, will exhibit time reversal invariant topological superconductivity. If confirmed experimentally this material will constitute the first example of TRI topological superconductor.