Weyl superconductors
Tobias Meng, Leon Balents
DOI 10.1103/PhysRevB.86.054504 · Physical Review B
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Abstract
We study the physics of the superconducting variant of Weyl semimetals, which may be realized in multilayer structures comprising topological insulators and superconductors. We show how superconductivity splits each Weyl node into two. The resulting Bogoliubov-Weyl nodes can be pairwise independently controlled, allowing to access a set of phases characterized by different numbers of bulk Bogoliubov-Weyl nodes and chiral Majorana surface modes. We analyze the physics of vortices in such systems, which trap zero-energy Majorana modes only under certain conditions. We finally comment on possible experimental probes, thereby also exploiting the similarities between Weyl superconductors and two-dimensional p+ip superconductors.
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