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| Hauptverfasser: | , , , , |
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| Format: | Preprint |
| Veröffentlicht: |
2026
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| Online-Zugang: | https://arxiv.org/abs/2602.11155 |
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| _version_ | 1866917268431044608 |
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| author | Saito, Kazuma Okugawa, Ryo Yokomizo, Kazuki Tohyama, Takami Hsu, Chen-Hsuan |
| author_facet | Saito, Kazuma Okugawa, Ryo Yokomizo, Kazuki Tohyama, Takami Hsu, Chen-Hsuan |
| contents | Non-reciprocal systems exhibit extreme sensitivity to boundary conditions, typically manifesting as the non-Hermitian skin effect (NHSE) under open boundaries. By bridging the boundaries with a tunable impurity bond, one can access intermediate regimes where scale-free localization (SFL) can emerge. Here, we investigate the competition between such boundary coupling and quasiperiodic disorder in a non-reciprocal lattice. Our analyses reveal a quasiperiodicity-induced breakdown of the SFL regime, which evolves into either the NHSE or an extended regime, depending on boundary conditions. These results uncover the crucial role of quasiperiodicity in non-Hermitian systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_11155 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Quasiperiodicity-induced non-Hermitian skin effect from the breakdown of scale-free localization Saito, Kazuma Okugawa, Ryo Yokomizo, Kazuki Tohyama, Takami Hsu, Chen-Hsuan Mesoscale and Nanoscale Physics Non-reciprocal systems exhibit extreme sensitivity to boundary conditions, typically manifesting as the non-Hermitian skin effect (NHSE) under open boundaries. By bridging the boundaries with a tunable impurity bond, one can access intermediate regimes where scale-free localization (SFL) can emerge. Here, we investigate the competition between such boundary coupling and quasiperiodic disorder in a non-reciprocal lattice. Our analyses reveal a quasiperiodicity-induced breakdown of the SFL regime, which evolves into either the NHSE or an extended regime, depending on boundary conditions. These results uncover the crucial role of quasiperiodicity in non-Hermitian systems. |
| title | Quasiperiodicity-induced non-Hermitian skin effect from the breakdown of scale-free localization |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2602.11155 |