Extracting the Infrared Permittivity of SiO₂ Substrates Locally by Near-Field Imaging of Phonon Polaritons in a van der Waals Crystal

by Patricia Aguilar-Merino, Gonzalo Álvarez-Pérez, Javier Taboada-Gutiérrez, Jiahua Duan, Iván Prieto, Luis Manuel Álvarez-Prado, Alexey Y. Nikitin, Javier Martín-Sánchez, Pablo Alonso-González
Published 2021-01-01