Non-Hermiticity enhanced topological immunity of one-dimensional $p$-wave superconducting chain
Abstract
Studying the immunity of topological superconductors against non-local disorder is one of the key issues in both fundamental researches and potential applications. Here, we demonstrate that the non-Hermiticity can enhance the robustness of topological edge states against non-local disorder. To illustrate that, we consider a one-dimensional (1D) generalized Kitaev model with the asymmetric hopping in the presence of disorder. It is shown that the region supporting Majorana zero modes (MZMs) against non-local disorder will be enlarged by the non-Hermiticity. Through both the numerical and analytical analyses, we show that non-Hermiticity can stabilize the topological superconducting (SC) phase against higher disorder strength. Our studies would offer new insights into the interplay between non-Hermiticity and topology.
Keywords
Cite
@article{arxiv.2501.05010,
title = {Non-Hermiticity enhanced topological immunity of one-dimensional $p$-wave superconducting chain},
author = {Min Liu and Yue Zhang and Rui Tian and Xiayao He and Tianhao Wu and Maksims Arzamasovs and Shuai Li and Bo Liu},
journal= {arXiv preprint arXiv:2501.05010},
year = {2025}
}