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arXiv · 2204.02742

Localization of Electronic States in Hybrid Nano-Ribbons in the Non-Perturbative Regime

Thomas Luu·Ulf-G. Meißner·Lado Razmadze
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Abstract

We investigate the localization of low-energy single quasi-particle states in the 7/9-hybrid nanoribbon system in the presence of strong interactions and within a finite volume. We consider two scenarios, the first being the Hubbard model at half-filling and perform quantum Monte Carlo simulations for a range $U$ that includes the strongly correlated regime. In the second case we add a nearest-neighbor superconducting pairing $Δ$ and take the symmetric line limit, where $Δ$ is equal in magnitude to the hopping parameter $t$. In this limit the quasi-particle spectrum and wavefunctions can be directly solved for general onsite interaction $U$. In both cases we extract the site-dependent quasi-particle wavefunction densities and demonstrate that localization persists in these non-perturbative regimes under particular scenarios.

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Thomas Luu, Ulf-G. Meißner, Lado Razmadze. 2022-05-13. Localization of Electronic States in Hybrid Nano-Ribbons in the Non-Perturbative Regime. https://doi.org/10.1103/physrevb.106.195422

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