Edge currents as a probe of the strongly spin-polarized topological noncentrosymmetric superconductors

Abstract

Recently the influence of antisymmetric spin-orbit coupling has been studied in novel topological superconductors such as half-Heuslers and artificial hetero-structures. We investigate the effect of Rashba and/or Dresselhaus spin-orbit couplings on the band structure and topological properties of a two-dimensional noncentrosymetric superconductor. For this goal, the topological helical edge modes are analyzed for different spin-orbit couplings as well as for several superconducting pairing symmetries. To explore the transport properties, we examine the response of the spin-polarized edge states to an exchange field in a superconductor-ferromagnet heterostructure. The broken chiral symmetry causes the uni-directional currents at opposite edges.

arXiv comment10 pages, 7 figures

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Cited by in corpus (6)

• Tuning Topological Superconductivity in Phase-Controlled Josephson Junctions with Rashba and Dresselhaus Spin-Orbit Coupling
• Anisotropic topological superconductivity in Josephson junctions
• Topological Superconductivity Induced by Magnetic Texture Crystals
• Crystalline Anisotropic Topological Superconductivity in Planar Josephson Junctions
• Proximity-driven ferromagnetism and superconductivity in the triangular Rashba-Hubbard model
• Spin and charge order in doped spin-orbit coupled Mott insulators