Fig. 1: Schematic plot of the bilayer β-Ga2O3 and β-Ga2O3’s frequency-dispersive permittivity. | npj Nanophotonics

Fig. 1: Schematic plot of the bilayer β-Ga2O3 and β-Ga2O3’s frequency-dispersive permittivity.

From: Hyperbolic polaritons in twisted β-Ga2O3

Fig. 1

a Twisted stacks of β-Ga2O3 with a thickness of d. The superstrate and substrate are air. Direction [001] is within the x-y plane but is not orthogonal to the x-axis [001]. b The components of permittivity tensor of β-Ga2O3.

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