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

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...

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Bibliographic Details
Published in:arXiv.org 2018-03
Main Authors: Biderang, Mehdi, Yavari, Heshmatollah, Mohammad-Hossein Zare, Thalmeier, Peter, Akbari, Alireza
Format: Article
Language:English
Subjects:
Couplings
Ferromagnetism
Heterostructures
Spin-orbit interactions
Topological superconductors
Transport properties
Online Access:Get full text
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Summary: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.
ISSN:2331-8422
DOI:10.48550/arxiv.1803.02591