Fig. 4From: Dispersion of Phonon Surface Polaritons in ZnGeP2: Anisotropy and Temperature ImpactsDispersion of the PSP in ZnGeP2, C||x. “Real” PSP: 1 300 K, 2 4 K; “virtual” PSP: 3, 5 300 K, 4, 6 4 K; 7 experimental “real” PSP, 300 K, 8 “light line”Back to article page