Time-reversal-invariant topological superconductors and superfluids in two and three dimensions.
We construct time-reversal invariant topological superconductors and superfluids in two and three dimensions. These states have a full pairing gap in the bulk, gapless counterpropagating Majorana states at the boundary, and a pair of Majorana zero modes associated with each vortex. The superfluid 3He B phase provides a physical realization of the topological superfluidity, with experimentally measurable surface states protected by the time-reversal symmetry. We show that the time-reversal symmetry naturally emerges as a supersymmetry, which changes the parity of the fermion number associated with each time-reversal invariant vortex and connects each vortex with its superpartner.
Qi
Xiao-Liang
XL
Department of Physics, McCullough Building, Stanford University, Stanford, California 94305-4045, USA.
Hughes
Taylor L
TL
Raghu
S
S
Zhang
Shou-Cheng
SC