We show that Majorana edge modes appear in a strongly correlated phase of semiconducting nanowires with discrete rotational symmetry in the cross section. These modes exist in the absence of spin-orbit coupling, magnetic fields, and superconductivity. They appear purely due to the combination of the three-dimensional Coulomb interaction and orbital physics, which generates a topological gap in one sector of the excitation spectrum as well as a topological ground-state degeneracy. The gap can be comparable in magnitude to the topological superconducting gap in other solid-state candidate systems for Majorana edge modes and may similarly be probed via tunnel spectroscopy.

Coulomb-interaction-induced Majorana edge modes in nanowires / Li T; Burrello M; Flensberg K. - In: PHYSICAL REVIEW. B. - ISSN 2469-9950. - 100:(2019). [10.1103/PhysRevB.100.045305]

Coulomb-interaction-induced Majorana edge modes in nanowires

Burrello M;
2019

Abstract

We show that Majorana edge modes appear in a strongly correlated phase of semiconducting nanowires with discrete rotational symmetry in the cross section. These modes exist in the absence of spin-orbit coupling, magnetic fields, and superconductivity. They appear purely due to the combination of the three-dimensional Coulomb interaction and orbital physics, which generates a topological gap in one sector of the excitation spectrum as well as a topological ground-state degeneracy. The gap can be comparable in magnitude to the topological superconducting gap in other solid-state candidate systems for Majorana edge modes and may similarly be probed via tunnel spectroscopy.
2019
100
Li T; Burrello M; Flensberg K
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1396194
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