Interplay of Long-Range Hopping and Spatially Correlated Bond Disorder in the Topological Robustness of the Extended SSH Model

Read the full article See related articles

Discuss this preprint

Start a discussion What are Sciety discussions?

Listed in

This article is not in any list yet, why not save it to one of your lists.
Log in to save this article

Abstract

We investigate the robustness of topological edge states in the Su-Schrieffer-Heeger (SSH) model extended with next-nearest-neighbor (NNN) hopping, under the influence of spatially correlated bond disorder. While uncorrelated (white) disorder is known to degrade topological invariants rapidly, we demonstrate that correlated disorder induces a resonant protection mechanism when the correlation length matches the hopping scales. By analyzing the real-space winding number and the inverse participation ratio (IPR) across finite-size scaling, we map out a phase diagram revealing regimes where topology survives beyond the standard Anderson localization limit. Our results suggest that engineering correlation in disorder can be a viable strategy to stabilize topological phases in noisy experimental platforms such as photonic lattices.

Article activity feed