Planar hyperbolic polaritons in 2D van der Waals materials

Hongwei Wang, Anshuman Kumar, Siyuan Dai, Xiao Lin, Zubin Jacob, Sang-Hyun Oh, Vinod Menon, Evgenii Narimanov, Young Duck Kim, Jian-Ping Wang, Phaedon Avouris, Luis Martin Moreno, Joshua Caldwell and Tony Low ()
Additional contact information
Hongwei Wang: University of Minnesota
Anshuman Kumar: IIT Bombay
Siyuan Dai: Auburn University
Xiao Lin: Zhejiang University
Zubin Jacob: Purdue University
Sang-Hyun Oh: University of Minnesota
Vinod Menon: City University of New York
Evgenii Narimanov: Purdue University
Young Duck Kim: Kyung Hee University
Jian-Ping Wang: University of Minnesota
Phaedon Avouris: University of Minnesota
Luis Martin Moreno: CSIC-Universidad de Zaragoza
Joshua Caldwell: Vanderbilt University
Tony Low: University of Minnesota

Nature Communications, 2024, vol. 15, issue 1, 1-14

Abstract: Abstract Anisotropic planar polaritons - hybrid electromagnetic modes mediated by phonons, plasmons, or excitons - in biaxial two-dimensional (2D) van der Waals crystals have attracted significant attention due to their fundamental physics and potential nanophotonic applications. In this Perspective, we review the properties of planar hyperbolic polaritons and the variety of methods that can be used to experimentally tune them. We argue that such natural, planar hyperbolic media should be fairly common in biaxial and uniaxial 2D and 1D van der Waals crystals, and identify the untapped opportunities they could enable for functional (i.e. ferromagnetic, ferroelectric, and piezoelectric) polaritons. Lastly, we provide our perspectives on the technological applications of such planar hyperbolic polaritons.

Date: 2024
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DOI: 10.1038/s41467-023-43992-8

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