Shaping chaos in bilayer graphene cavities
Fuente:
arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866911349568700416 |
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| author | Lin, Jucheng Zhuang, Yicheng Graf, Anton M. Keski-Rahkonen, Joonas Heller, Eric J. |
| author_facet | Lin, Jucheng Zhuang, Yicheng Graf, Anton M. Keski-Rahkonen, Joonas Heller, Eric J. |
| contents | Bilayer graphene cavities where electrons are confined within finite graphene flakes provide an alluring platform not only for the future nanoelectronic devices owing to the tunable energy gap but also for investigating the quantum nature of chaos due to the trigonal warping of their Fermi surface. Here we demonstrate that rotating the cavity boundary relative to the underlying lattice structure drives a quantum transition from nearly integrable dynamics to chaotic regime, observed as a concomitant crossover of eigenvalue statistics and eigenstate profiles. Complementing the full quantum treatment, we examine the classical backbone of this onset of chaos by employing semiclassical ray dynamics. Our results position bilayer graphene cavities as a promising venue for investigating and engineering quantum-chaotic behavior in graphene-based devices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_10914 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Shaping chaos in bilayer graphene cavities Lin, Jucheng Zhuang, Yicheng Graf, Anton M. Keski-Rahkonen, Joonas Heller, Eric J. Mesoscale and Nanoscale Physics Disordered Systems and Neural Networks Statistical Mechanics Bilayer graphene cavities where electrons are confined within finite graphene flakes provide an alluring platform not only for the future nanoelectronic devices owing to the tunable energy gap but also for investigating the quantum nature of chaos due to the trigonal warping of their Fermi surface. Here we demonstrate that rotating the cavity boundary relative to the underlying lattice structure drives a quantum transition from nearly integrable dynamics to chaotic regime, observed as a concomitant crossover of eigenvalue statistics and eigenstate profiles. Complementing the full quantum treatment, we examine the classical backbone of this onset of chaos by employing semiclassical ray dynamics. Our results position bilayer graphene cavities as a promising venue for investigating and engineering quantum-chaotic behavior in graphene-based devices. |
| title | Shaping chaos in bilayer graphene cavities |
| topic | Mesoscale and Nanoscale Physics Disordered Systems and Neural Networks Statistical Mechanics |
| url | https://arxiv.org/abs/2512.10914 |