Non-Abelian toplogical superconductors from topological semimetals and   related systems under superconducting proximity effect
  Non-Abelian toplogical superconductors are characterized by the existence of {zero-energy} Majorana fermions bound in the quantized vortices. This is a consequence of the nontrivial bulk topology characterized by an {\em odd} Chern number. It is found that in topological semimetals with a single two-bands crossing point all the gapped superconductors are non-Abelian ones. Such a property is generalized to related but more generic systems which will be useful in the search of non-Abelian superconductors and Majorana fermions. 
Jian-Hua Jiang and Si Wu
cond-mat.str-el cond-mat.supr-con quant-ph