A non-van der Waals platform for deep-subwavelength twist-polaritonics based on β-Ga2O3 nanoflakes
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Twist-polaritonics provides precise control of light-matter states through the stacking of atomically smooth, anisotropic layers, but has been restricted to the van der Waals (vdW) crystals. Non-vdW crystals, despite their symmetry-broken dielectric responses ... ...
