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cond-mat.other2026
Dispersion Splitting of Phonon Polaritons in van der Waals Heterostructure
Daeho Noh, Jaehyeong Ock, Sergey G. Menabde +1
The biaxial van der Waals crystal α-phase molybdenum trioxide (α-MoO3) supports hyperbolic phonon-polaritons with anomalous dispersion in the Type-I Reststrahlen band (RB-I). Despi…
physics.optics2026
Local control and lateral nanofocusing of hyperbolic phonon polaritons
Jacob T. Heiden, Haozhe Tong, Yongjun Lim +6
Phonon polaritons in van der Waals crystals enable exceptional light confinement and control over low-loss nanolight propagation. The polariton wavelength can be controlled by the…