ArticleScience advances2025
Real-space imaging of confined infrared surface plasmon polaritons on doped semiconductors covered with phase-change materials.
Article in Science advances, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Two-dimensional metal oxide polaritonics.Nature communications · 2026Review
- Fast Programming of in-Plane Hyperbolic Phonon Polariton Optics through Van der Waals Crystals Using the Phase-Change Material InAdvanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Characterization of Complex Stacking of Semiconductors Through Near Field Imaging and Spectroscopy.Advanced materials (Deerfield Beach, Fla.) · 2026Article
- Infrared beam-shaping on demand via tailored geometric phase metasurfaces employing the plasmonic phase-change material InNature communications · 2025Article
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Authors and funding
10 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Surface plasmon polaritons (SPPs) describe the excitation of photons coupled with free charge carriers at the interface of metals (visible) or doped semiconductors (infrared). While SPPs in the mid-infrared spectral range have been demonstrated in 2D materials such as graphene, their short propagation length combined with weak confinement in bulk materials has prevented real-space imaging of those SPPs. Here, we demonstrate real-space imaging of propagating SPPs on the doped semiconductors CdO and InAs with tunable plasma frequencies in the infrared via scattering-type scanning near-field optical microscopy. Adding a thin film of phase-change materials (PCMs) to these doped semiconductors increases the polariton confinement, leading to simplified SPP imaging and SPP resonator fabrication. We investigate optically written circular resonators of the plasmonic PCM In
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