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Topological Superconductivity Mediated by Skyrmionic Magnons

Superconductivity 2023-04-14 v2 Strongly Correlated Electrons

Abstract

Topological superconductors are associated with the appearance of Majorana bound states, with promising applications in topologically protected quantum computing. In this Letter, we study a system where a skyrmion crystal is interfaced with a normal metal. Through interfacial exchange coupling, spin fluctuations in the skyrmion crystal mediate an effective electron-electron interaction in the normal metal. We study superconductivity within a weak-coupling approach and solve gap equations both close to the critical temperature and at zero temperature. Special features in the effective electron-electron interaction due to the noncolinearity of the magnetic ground state yield topological superconductivity at the interface.

Keywords

Cite

@article{arxiv.2211.05129,
  title  = {Topological Superconductivity Mediated by Skyrmionic Magnons},
  author = {Kristian Mæland and Asle Sudbø},
  journal= {arXiv preprint arXiv:2211.05129},
  year   = {2023}
}

Comments

6 pages, 4 figures, Supplemental material: 17 pages, 8 figures, accepted in Physical Review Letters

R2 v1 2026-06-28T05:32:43.561Z