Higher order topological superconductivity in magnet-superconductor hybrid systems

Ka Ho Wong, Mark R. Hirsbrunner, Jacopo Gliozzi, Arbaz Malik, Barry Bradlyn, Taylor L. Hughes, Dirk K. Morr

Research output: Contribution to journalArticlepeer-review


Quantum engineering of topological superconductors and of the ensuing Majorana zero modes might hold the key for realizing topological quantum computing and topology-based devices. Magnet-superconductor hybrid (MSH) systems have proven to be experimentally versatile platforms for the creation of topological superconductivity by custom-designing the complex structure of their magnetic layer. Here, we demonstrate that higher order topological superconductivity (HOTSC) can be realized in two-dimensional MSH systems by using stacked magnetic structures. We show that the sensitivity of the HOTSC to the particular magnetic stacking opens an intriguing ability to tune the system between trivial and topological phases using atomic manipulation techniques. We propose that the realization of HOTSC in MSH systems, and in particular the existence of the characteristic Majorana corner modes, allows for the implementation of a measurement-based protocols for topological quantum computing.

Original languageEnglish (US)
Article number31
Journalnpj Quantum Materials
Issue number1
StatePublished - Dec 2023
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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