2020/01/10 by Guangwei Hu, Alex Krasnok, Yarden Mazor +3 · 284 citations
Engineering · Materials Science · Physics and Astronomy · #Advanced Antenna and Metasurface Technologies #Antenna Design and Analysis #Materials science #Metamaterials and Metasurfaces Applications #Moiré pattern #Optics #Physics #physics.optics
paper · pdf · doi:10.1021/acs.nanolett.9b05319
published in Nano Letters 20(5), 3217-3224 (American Chemical Society) · 17 pages, 4 figures
arxiv created 2020/01/10 · openalex publication_date 2020/04/16 · arxiv updated 2020/05/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Recent advances in twistronics of low-dimensional materials, such as bilayer graphene and transition-metal dichalcogenides, have enabled a plethora of unusual phenomena associated with moiré physics. However, several of these effects require demanding manipulation of superlattices at the atomic scale, such as the careful control of rotation angle between two closely spaced atomic lattices. Here, we study moiré hyperbolic plasmons in pairs of hyperbolic metasurfaces (HMTSs), unveiling analogous phenomena at the mesoscopic scale. HMTSs are known to support confined surface waves collimated toward specific directions determined by the metasurface dispersion. By rotating two evanescently coupled HMTSs with respect to one another, we unveil rich dispersion engineering, topological transitions at magic angles, broadband field canalization, and plasmon spin-Hall phenomena. These findings open remarkable opportunities to advance metasurface optics, enriching it with moiré physics and twistronic concepts.