Robustness of a quasicrystalline higher-order topological insulator

Traverso, Simone (2022) Robustness of a quasicrystalline higher-order topological insulator. Il nuovo cimento C, 45 (4). pp. 1-9. ISSN 1826-9885

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Abstract

It was recently discovered that quasicrystalline systems may provide a platform for the realisation of higher order topological insulators, where the topological phase is protected by spatial symmetries. In this paper I focus on a specific model and study the robustness of its topological phase against perturbations of the protecting symmetry. This is done both by varying the shape of the sample and by deforming the lattice. While signatures of the higher order topological phase can persist, the effects of an even slight symmetry breaking are significant.

Item Type:	Article
Subjects:	500 Scienze naturali e Matematica > 530 Fisica
Depositing User:	Marina Spanti
Date Deposited:	06 Sep 2022 11:33
Last Modified:	06 Sep 2022 11:33
URI:	http://eprints.bice.rm.cnr.it/id/eprint/21984

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