Two-dimensional moir\'{e} phonon polaritons
Mesoscale and Nanoscale Physics
2025-11-06 v2 Optics
Abstract
Phonon polaritons (PhPs) are hybrid light-matter modes. We investigate them in two-dimensional (2D) materials with twisted moir\'{e} structures, revealing that the moir\'{e} potential creates a new class of `moir\'{e} 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 moir\'{e} superlattices as a platform for engineering light-matter interactions.
Keywords
Cite
@article{arxiv.2501.00313,
title = {Two-dimensional moir\'{e} phonon polaritons},
author = {Hao Shi and Chu Li and Ding Pan and Xi Dai},
journal= {arXiv preprint arXiv:2501.00313},
year = {2025}
}