Generic Weyl phase in the vortex state of quasi-two-dimensional chiral superconductors
arXiv:1606.00329 · doi:10.1103/PhysRevB.94.060507
Abstract
We study the collective behavior of Majorana modes in the vortex state of chiral -wave superconductors. Away from the isolated vortex limit, the zero-energy Majorana states communicate with each other on a vortex lattice, and form a coherent band structure with non-trivial topological character. We revealed that the topological nature of Majorana bands changes sensitively via quantum phase transitions in the two-dimensional (2D) systems, as sweeping magnetic field or Fermi energy. Through the dimensional reduction, we showed the existence of generic superconducting Weyl phase in a low magnetic field region of quasi-2D-chiral superconductors.
5 pages, 3 figures
References in corpus (14)
- Superconducting proximity effect and Majorana fermions at the surface of a topological insulator
- Majorana Fermions and a Topological Phase Transition in Semiconductor-Superconductor Heterostructures
- Classification of topological insulators and superconductors in three spatial dimensions
- Topological Field Theory of Time-Reversal Invariant Insulators
- Non-Abelian Topological Order in S-Wave Superfluids of Ultracold Fermionic Atoms
- Topological Phases of Noncentrosymmetric Superconductors: Edge States, Majorana Fermions, and the Non-Abelian Statistics
- Non-Abelian Topological Orders and Majorana Fermions in Spin-Singlet Superconductors
- Odd-parity topological superconductor with nematic order: Application to CuxBi2Se3
- Topological spin-current in non-centrosymmetric superconductors
- Splitting of Majorana modes due to intervortex tunneling in a p + ip superconductor
- Tunneling of anyonic Majorana excitations in topological superconductors
- Flat band in the core of topological defects: bulk-vortex correspondence in topological superfluids with Fermi points
- Electronic structure of topological superconductors in the presence of a vortex lattice
- Majorana bands, Berry curvature, and thermal Hall conductivity in the vortex state of a chiral p-wave superconductor