Work

Multiple species of Majorana zero modes in reconstructed quantum Hall edges

Year: 2024

Type: article

Abstract: A smooth edge potential could lead to edge reconstruction of a $\ensuremath{\nu}=1$ quantum Hall state, resulting in an additional $\ensuremath{\nu}=1/3$ QH side strip, which, in turn, may yield Majorana/parafermion zero modes at the domain wall of the superconductor and ferromagnet on the edge. We demonstrate that the constraints imposed by the $\ensuremath{\nu}=1$ bulk permit the existence of multiple types of electron operators, leading to distinct and immutable species of Majorana modes. Different velocities of the reconstructed edge modes provide a clear signature of these species of Majoranas in the $4\ensuremath{\pi}$ fractional Josephson current.

Source: Physical review. B./Physical review. B

DOI: 10.1103/physrevb.110.l161302

Authors: Kishore Iyer, Amulya Ratnakar, Sumathi Rao, Sourin Das

Institutions: Aix-Marseille Université, Indian Institute of Science Education and Research Kolkata, Tata Institute of Fundamental Research

Language: English

Topic: Topological Materials and Phenomena

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: University Grants Commission, Indo-French Centre for the Promotion of Advanced Research

OpenAlex ID: W4403749019