Propagation of polariton waves on anisotropic substrates and in epsilon near zero spectral regions

• Grant number: 24/00938-3
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: April 01, 2024
• End date: February 28, 2027
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Principal Investigator: Francisco Carlos Barbosa Maia
• Grantee: Yuri Bernardes Marçal
• Host Institution: Centro Nacional de Pesquisa em Energia e Materiais (CNPEM). Ministério da Ciência, Tecnologia e Inovação (Brasil). Campinas , SP, Brazil
• Associated research grant: 22/02901-4 - Nano-optics of polaritons in two-dimensional crystals and at the metal/dielectric interface in the mid-to-far infrared, AP.PNGP.PI

Abstract

One of the main aims of the polaritonics in 2D materials is to achieve control of the polariton waves propagation. This work aims to study (i) the anisotropic propagation of polaritons in hBN on alfa-MoO3 and GeSe substrates that have different crystalline axes in the basal plane and (ii) understand the mechanisms that cause the reflection of polariton waves in spectral regions of close epsilon to zero. The investigations will be carried out using near-field techniques: SINS and s-SNOM.