pith:KBA77APK
Visible-NIR-Frequency Hyperbolic Response in Nodal-Line Semimetal PbTaSe$_2$
PbTaSe₂ exhibits robust hyperbolic optical behavior in the visible to near-infrared range from its intrinsic anisotropic structure.
arxiv:2605.12611 v1 · 2026-05-12 · physics.optics · cond-mat.mtrl-sci
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Claims
we experimentally demonstrate that the nodal-line semimetal PbTaSe₂ exhibits robust hyperbolic optical behavior in the visible to near-infrared spectral range, which arises intrinsically from its anisotropic electronic structure and layered crystal symmetry
The ellipsometry and reflectance data reflect true bulk hyperbolic response rather than surface contamination, defects, or thin-film effects, and the Drude-Lorentz fit accurately separates the plasmonic contribution without post-hoc parameter adjustments.
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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| First computed | 2026-05-18T03:10:00.626359Z |
|---|---|
| Builder | pith-number-builder-2026-05-17-v1 |
| Signature | Pith Ed25519
(pith-v1-2026-05) · public key |
| Schema | pith-number/v1.0 |
Canonical hash
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Canonical record JSON
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