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

Luu, Tom; Meissner, Ulf-G.; Razmadze, Lado

Preprint

FZJ-2022-04402

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

Luu, T.FZJ* ; Meissner, U.-G.FZJ* ; Razmadze, L. (Corresponding author)FZJ*

2022

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Please use a persistent id in citations: http://hdl.handle.net/2128/32561

Report No.: arXiv:2204.02742

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 $\Delta$ and take the symmetric line limit, where $\Delta$ 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.

Note: 27 pages, 17 figures

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