Hexagonal boron nitride as a natural hyperbolic material has attracted lots of attention recently. Here, we investigate numerically the optical spectrum properties of hexagonal boron nitride from the perspective of optical transition. After careful data analysis, hexagonal boron nitride at the epsilon-near-zero point of permittivity either turns from a hyperbolic material to an effective dielectric for transverse magnetic-polarized wave or from an effective metal to an effective dielectric for transverse electric-polarized wave. The results in this work may pave the way for potential applications of hexagonal boron nitride in the field of metamaterials.
机构:
Univ Technol Sydney, Sch Elect & Data Engn, Ultimo, NSW 2007, AustraliaUniv Technol Sydney, Sch Elect & Data Engn, Ultimo, NSW 2007, Australia
Hossain, Md Shakhawath
Chen, Chaohao
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Australian Natl Univ, Res Sch Phys, Dept Elect Mat Engn, Canberra, ACT 2601, Australia
Australian Natl Univ, ARC Ctr Excellence Transformat Meta Opt Syst TMOS, Res Sch Phys, Canberra, ACT 2601, AustraliaUniv Technol Sydney, Sch Elect & Data Engn, Ultimo, NSW 2007, Australia
机构:
Natl Inst Mat Sci, Tsukuba, Ibaraki 3050044, JapanUniv Tokyo, Dept Mat Engn, Tokyo 1138656, Japan
Taniguchi, Takashi
Watanabe, Kenji
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Natl Inst Mat Sci, Tsukuba, Ibaraki 3050044, JapanUniv Tokyo, Dept Mat Engn, Tokyo 1138656, Japan
Watanabe, Kenji
Nagashio, Kosuke
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Univ Tokyo, Dept Mat Engn, Tokyo 1138656, Japan
Japan Sci & Technol Agcy JST, PRESTO, Tokyo 1138656, JapanUniv Tokyo, Dept Mat Engn, Tokyo 1138656, Japan