English

Can Majorana zero modes in quantum Hall edges survive edge reconstruction?

Mesoscale and Nanoscale Physics 2026-05-01 v2

Abstract

Parafermion zero modes can be trapped in the domain walls of quantum Hall edges proximitized by superconductors and ferromagnets. The ν=1/3\nu = 1/3 fractional quantum Hall side strip arising due to edge reconstruction of a ν=1\nu = 1 edge doubles the number of topological sectors such that each of them is Z2×Z2Z_{2} \times Z_{2} degenerate. The many-body spectrum displays a 4π4\pi Josephson periodicity, with the states in each Z2Z_{2} being energetically decoupled. Signatures of the new states appear in the fractional Josephson current when the edge velocities are taken to be different.

Keywords

Cite

@article{arxiv.2308.01980,
  title  = {Can Majorana zero modes in quantum Hall edges survive edge reconstruction?},
  author = {Kishore Iyer and Amulya Ratnakar and Sumathi Rao and Sourin Das},
  journal= {arXiv preprint arXiv:2308.01980},
  year   = {2026}
}