Modified Brewster angle on conducting 2D materials
| Autor: | Matthieu Paillet, Luc Henrard, Bruno Majérus, Nicolas Reckinger, Philippe Lambin, Michaël Lobet, Mirko Cormann |
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| Přispěvatelé: | Laboratoire Charles Coulomb (L2C), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Materials science
02 engineering and technology Substrate (electronics) Conductivity 01 natural sciences Optical conductivity law.invention symbols.namesake law 2D conducting materials non-contact measurement 0103 physical sciences General Materials Science 010306 general physics [PHYS.COND.CM-MSQHE]Physics [physics]/Condensed Matter [cond-mat]/Mesoscopic Systems and Quantum Hall Effect [cond-mat.mes-hall] Range (particle radiation) Brewster's angle business.industry Graphene Mechanical Engineering Numerical analysis Fermi level graphene General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Brewster angle Mechanics of Materials symbols [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] Optoelectronics conductivity 0210 nano-technology business |
| Zdroj: | 2D Materials 2D Materials, IOP Publishing, 2018, 5 (2), pp.025007. ⟨10.1088/2053-1583/aaa574⟩ Majerus, B, Cormann, M, Reckinger, N, Paillet, M, Henrard, L, Lambin, P & Lobet, M 2018, ' Modified Brewster angle on conducting 2D materials ', 2D Materials, vol. 5, no. 2, 025007 . https://doi.org/10.1088/2053-1583/aaa574 |
| ISSN: | 2053-1583 |
| Popis: | Insertion of two-dimensional (2D) materials in optical systems modifies their electrodynamical response. In particular, the Brewster angle undergoes an up-shift if a substrate is covered with a conducting 2D material. This work theoretically and experimentally investigates this effect related to the 2D induced current at the interface. The shift is predicted for all conducting 2D materials and tunability with respect to the Fermi level of graphene is evidenced. Analytical approximations for high and low 2D conductivities are proposed and avoid cumbersome numerical analysis of experimental data. Experimental demonstration using spectroscopic ellipsometry has been performed in the UV to NIR range on mono-, bi- and trilayer graphene samples. The non-contact measurement of this modified Brewster angle allows to deduce the optical conductivity of 2D materials. Applications to telecommunication technologies can be considered thanks to the tunability of the shift at 1.55 μm. |
| Databáze: | OpenAIRE |
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