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Proceedings Paper

Hyperbolic phonon polaritons in hexagonal boron nitride (Conference Presentation)
Author(s): Siyuan Dai; Qiong Ma; Zhe Fei; Mengkun Liu; Michael D. Goldflam; Trond Andersen; William Garnett; Will Regan; Martin Wagner; Alexander S. McLeod; Alexandr Rodin; Shou-En Zhu; Kenji Watanabe; T. Taniguchi; Gerado Dominguez; Mark Thiemens; Antonio H. Castro Neto; Guido C.A. M. Janssen; Alex Zettl; Fritz Keilmann; Pablo Jarillo-Herrero; Michael M. Fogler; Dmitri N. Basov
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Paper Abstract

Uniaxial materials whose axial and tangential permittivities have opposite signs are referred to as indefinite or hyperbolic media. While hyperbolic responses are normally achieved with metamaterials, hexagonal boron nitride (hBN) naturally possesses this property due to the anisotropic phonons in the mid-infrared. Using scattering-type scanning near-field optical microscopy, we studied polaritonic phenomena in hBN. We performed infrared nano-imaging of highly confined and low-loss hyperbolic phonon polaritons in hBN. The polariton wavelength was shown to be governed by the hBN thickness according to a linear law persisting down to few atomic layers [1]. Additionally, we carried out the modification of hyperbolic response in meta-structures comprised of a mononlayer graphene deposited on hBN [2]. Electrostatic gating of the top graphene layer allows for the modification of wavelength and intensity of hyperbolic phonon polaritons in bulk hBN. The physics of the modification originates from the plasmon-phonon coupling in the hyperbolic medium. Furthermore, we demonstrated the “hyperlens” for subdiffractional focusing and imaging using a slab of hBN [3]. References [1] S. Dai et al., Science, 343, 1125 (2014). [2] S. Dai et al., Nature Nanotechnology, 10, 682 (2015). [3] S. Dai et al., Nature Communications, 6, 6963 (2015).

Paper Details

Date Published: 9 November 2016
PDF: 1 pages
Proc. SPIE 9918, Metamaterials, Metadevices, and Metasystems 2016, 99181Q (9 November 2016); doi: 10.1117/12.2236367
Show Author Affiliations
Siyuan Dai, Univ. of California, San Diego (United States)
Qiong Ma, Massachusetts Institute of Technology (United States)
Zhe Fei, Univ. of California, San Diego (United States)
Mengkun Liu, Univ. of California, San Diego (United States)
Michael D. Goldflam, Univ. of California, San Diego (United States)
Trond Andersen, Massachusetts Institute of Technology (United States)
William Garnett, Univ. of California, Berkeley (United States)
Will Regan, Univ. of California, Berkeley (United States)
Martin Wagner, Univ. of California, San Diego (United States)
Alexander S. McLeod, Univ. of California, San Diego (United States)
Alexandr Rodin, National Univ. of Singapore (Singapore)
Shou-En Zhu, Technische Univ. Delft (Netherlands)
Kenji Watanabe, National Institute for Materials Science (Japan)
T. Taniguchi, National Institute for Materials Science (Japan)
Gerado Dominguez, Univ. of California, San Diego (United States)
Mark Thiemens, Univ. of California, San Diego (United States)
Antonio H. Castro Neto, National Univ. of Singapore (Singapore)
Guido C.A. M. Janssen, Technische Univ. Delft (Netherlands)
Alex Zettl, Univ. of California, Berkeley (United States)
Fritz Keilmann, Ludwig-Maximilians-Univ. München (Germany)
Pablo Jarillo-Herrero, Massachusetts Institute of Technology (United States)
Michael M. Fogler, Univ. of California, San Diego (United States)
Dmitri N. Basov, Univ. of California, San Diego (United States)


Published in SPIE Proceedings Vol. 9918:
Metamaterials, Metadevices, and Metasystems 2016
Nader Engheta; Mikhail A. Noginov; Nikolay I. Zheludev, Editor(s)

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