The reflectivities of monolayer two-dimensional crystals, immersed in polydimethylsiloxane, have been measured at a wavelength of 532 nm. The polydimethylsiloxane does not alter the physical properties of the atomic crystals. The only difference with respect to the study of a free-standing sample is that the two-dimensional crystals are embedded in a medium with a refractive index n = 1.414 rather than 1. In this particular experimental configuration, we observe a pseudo-Brewster angle for p polarization. This observation is direct evidence of a non null out-of-plane optical surface susceptibility for these crystals.

Pseudo-Brewster angles for monolayer-MoS2 and graphene immersed in a dielectric medium

Ferraro, D
Membro del Collaboration Group
;
Zaltron, A
Membro del Collaboration Group
;
Galvanetto, N
Membro del Collaboration Group
;
Merano, M
Conceptualization
2022

Abstract

The reflectivities of monolayer two-dimensional crystals, immersed in polydimethylsiloxane, have been measured at a wavelength of 532 nm. The polydimethylsiloxane does not alter the physical properties of the atomic crystals. The only difference with respect to the study of a free-standing sample is that the two-dimensional crystals are embedded in a medium with a refractive index n = 1.414 rather than 1. In this particular experimental configuration, we observe a pseudo-Brewster angle for p polarization. This observation is direct evidence of a non null out-of-plane optical surface susceptibility for these crystals.
2022
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/3461494
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