Gapped electronic systems can possess nontrivial topology and while many topological insulators have now been found, topological superconductors are much rarer.
Topological superconductors contain protected Majorana surface states, which can occur due to a nontrivial topology of the bulk quasiparticle wavefunctions. These states have important implications in the quest for quantum information technology.
The authors, Schnyder and Brydon, provide an excellent overview, for theorists and experimentalists alike, of nodal topological superconductors and show through carefully selected examples how different topological superconductors can be realised along with the unusual properties they display.
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Image adapted from Schnyder et al J. Phys.: Condens. Matter 27 243201. Copyright IOP Publishing 2015.
Categories: Journal of Physics: Condensed Matter