We report the experimental observation of the out -of -plane optical conductivity in bilayer graphene at a wavelength of 633 nm. While the in -plane optical constants vary by a few percent from the single -layer crystal up to the bulk, this physical quantity depends strongly on interlayer interactions, being at least three times larger in bilayer than in monolayer graphene.
Out-of-plane optical conductivity measured in bilayer graphene
Ferraro, Davide;Xu, Zhemi;Cobelli, Leonardo;Dell'Anna, Luca;Martucci, Alessandro;Umari, Paolo;Merano, Michele
2024
Abstract
We report the experimental observation of the out -of -plane optical conductivity in bilayer graphene at a wavelength of 633 nm. While the in -plane optical constants vary by a few percent from the single -layer crystal up to the bulk, this physical quantity depends strongly on interlayer interactions, being at least three times larger in bilayer than in monolayer graphene.
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