Abstract
We propose a platform to realize nodal topological superconductors in a superconducting monolayer of using an in-plane magnetic field. The bulk nodal points appear where the spin splitting due to spin-orbit coupling vanishes near the valleys of the Brillouin zone and are six or twelve per valley in total. In the nodal topological superconducting phase, the nodal points are connected by flat bands of zero-energy Andreev edge states. These flat bands, which are protected by chiral symmetry, are present for all lattice-termination boundaries except zigzag.
- Received 22 June 2018
- Revised 23 October 2018
DOI:https://doi.org/10.1103/PhysRevB.98.205411
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