PbTaSe₂ exhibits intrinsic plasmonic hyperbolic response in the visible-NIR range with anisotropy parameter |R| ≈ 231 and quality factor Q_max ≈ 2.8 at 0.78 eV.
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Visible-NIR-Frequency Hyperbolic Response in Nodal-Line Semimetal PbTaSe$_2$
PbTaSe₂ exhibits intrinsic plasmonic hyperbolic response in the visible-NIR range with anisotropy parameter |R| ≈ 231 and quality factor Q_max ≈ 2.8 at 0.78 eV.