Fig. 1 | NPG Asia Materials

Fig. 1

From: Phase-change-driven dielectric-plasmonic transitions in chalcogenide metasurfaces

Fig. 1

Chalcogenide plasmonics. a Spectral dispersion [from variable angle ellipsometric measurements] of the real ε1 and imaginary ε2 parts of the relative permittivity of sputtered germanium antimony telluride [GST] in its amorphous and polycrystalline phases. b Spectral dispersion of plasmonic figures of merit for polycrystalline GST and a selection of other plasmonic materials [as labeled; calculated using material parameters from refs. 24, 40]

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