Two-dimensional moiré phonon polaritons
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866915597848150016 |
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| author | Shi, Hao Li, Chu Pan, Ding Dai, Xi |
| author_facet | Shi, Hao Li, Chu Pan, Ding Dai, Xi |
| contents | Phonon polaritons (PhPs) are hybrid light-matter modes. We investigate them in two-dimensional (2D) materials with twisted moiré structures, revealing that the moiré potential creates a new class of `moiré PhPs'. These exhibit a fundamental spectral reconstruction into multiple branches and, crucially, electromagnetic wavefunctions that are nano-patterned by the superlattice. Through numerical simulations based on realistic lattice models, we confirm the existence of these intriguing modes. The inherent nanoscale structuring produces a robust, spatially varying near-field response, establishing moiré superlattices as a platform for engineering light-matter interactions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_00313 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Two-dimensional moiré phonon polaritons Shi, Hao Li, Chu Pan, Ding Dai, Xi Mesoscale and Nanoscale Physics Optics Phonon polaritons (PhPs) are hybrid light-matter modes. We investigate them in two-dimensional (2D) materials with twisted moiré structures, revealing that the moiré potential creates a new class of `moiré PhPs'. These exhibit a fundamental spectral reconstruction into multiple branches and, crucially, electromagnetic wavefunctions that are nano-patterned by the superlattice. Through numerical simulations based on realistic lattice models, we confirm the existence of these intriguing modes. The inherent nanoscale structuring produces a robust, spatially varying near-field response, establishing moiré superlattices as a platform for engineering light-matter interactions. |
| title | Two-dimensional moiré phonon polaritons |
| topic | Mesoscale and Nanoscale Physics Optics |
| url | https://arxiv.org/abs/2501.00313 |