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.
@article{arxiv.1406.7316,
title = {Time-reversal-invariant topological superconductivity in n-doped BiH},
author = {Fan Yang and Cheng-Cheng Liu and Yu-Zhong Zhang and Yugui Yao and Dung-Hai Lee},
journal= {arXiv preprint arXiv:1406.7316},
year = {2015}
}