期刊
PHYSICAL REVIEW B
卷 94, 期 20, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.94.201404
关键词
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资金
- EFRI 2-DARE NSF Grant [1542807]
- ARO MURI Award [W911NF14-0247]
- E.U. programs [FP7-REGPOT-2012-2013-1, 316165, H2020-MSCA-RISE-2015-691209-NHQWAVE]
- SEED grant of Nazarbayev University
- Directorate For Engineering
- Emerging Frontiers & Multidisciplinary Activities [1542807] Funding Source: National Science Foundation
The electromagnetic response of a two-dimensional metal embedded in a periodic array of a dielectric host can give rise to a plasmonic Dirac point that emulates epsilon-near-zero (ENZ) behavior. This theoretical result is extremely sensitive to structural features like periodicity of the dielectric medium and thickness imperfections. We propose that such a device can actually be realized by using graphene as the two-dimensional metal and materials like the layered semiconducting transition-metal dichalcogenides or hexagonal boron nitride as the dielectric host. We propose a systematic approach, in terms of design characteristics, for constructing metamaterials with linear, elliptical, and hyperbolic dispersion relations which produce ENZ behavior, normal or negative diffraction.
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