Topological strings linking with quasiparticle exchange in superconducting Dirac semimetals
Topological strings linking with quasiparticle exchange in superconducting Dirac semimetals
We demonstrate a topological classification of vortices in three-dimensional time-reversal invariant topological superconductors based on superconducting Dirac semimetals with an $s$-wave superconducting order parameter by means of a pair of numbers $({N}_{\mathrm{\ensuremath{\Phi}}},N)$, accounting how many units ${N}_{\mathrm{\ensuremath{\Phi}}}$ of magnetic fluxes $hc/4e$ and how many $N$ chiral Majorana modes the vortex …