Nematic skyrmions in odd-parity superconductors
We study topological excitations in two-component nematic superconductors, with a
particular focus on Cu x Bi 2 Se 3 as a candidate material. We find that the lowest-energy
topological excitations are coreless vortices: a bound state of two spatially separated half-
quantum vortices. These objects are nematic Skyrmions, since they are characterized by an
additional topological charge. The inter-Skyrmion forces are dipolar in this model, ie,
attractive for certain relative orientations of the Skyrmions, hence forming multi-Skyrmion …
particular focus on Cu x Bi 2 Se 3 as a candidate material. We find that the lowest-energy
topological excitations are coreless vortices: a bound state of two spatially separated half-
quantum vortices. These objects are nematic Skyrmions, since they are characterized by an
additional topological charge. The inter-Skyrmion forces are dipolar in this model, ie,
attractive for certain relative orientations of the Skyrmions, hence forming multi-Skyrmion …
We study topological excitations in two-component nematic superconductors, with a particular focus on as a candidate material. We find that the lowest-energy topological excitations are coreless vortices: a bound state of two spatially separated half-quantum vortices. These objects are nematic Skyrmions, since they are characterized by an additional topological charge. The inter-Skyrmion forces are dipolar in this model, i.e., attractive for certain relative orientations of the Skyrmions, hence forming multi-Skyrmion bound states.
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