Majorana edge-modes in a spinful particle conserving model
Abstract
We show the presence of Majorana edge modes in an interacting fermionic ladder with spin in a number conserved setting. The interchain single particle hopping is suppressed and only a pair hopping is present between the different chains of the ladder. Additionally, the hopping along the chains is spin imbalanced and a transverse magnetic field is applied breaking time-reversal invariance. We study the robustness of the topological phase with respect to an on-site interaction between the spin-up and spin-down fermions and the spin dependent imbalance of the hopping. The main result of the present work is that the topological phase survives for a finite region in the parameter space in the presence of interactions. The localized Majorana edge modes seems to be more stable in the case when the on-site interaction is an attraction.
Cite
@article{arxiv.2208.09346,
title = {Majorana edge-modes in a spinful particle conserving model},
author = {Franco T. Lisandrini and Corinna Kollath},
journal= {arXiv preprint arXiv:2208.09346},
year = {2022}
}
Comments
22 pages, 26 figures