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Probing Polaritons in 2D Materials with Synchrotron Infrared Nanospectroscopy

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Autor(es):
Barcelos, Ingrid D. [1] ; Bechtel, Hans A. [2] ; de Matos, Christiano J. S. [3] ; Bahamon, Dario A. [3] ; Kaestner, Bernd [4] ; Maia, Francisco C. B. [1] ; Freitas, Raul O. [1]
Número total de Autores: 7
Afiliação do(s) autor(es):
[1] Brazilian Ctr Res Energy & Mat CNPEM, Brazilian Synchrotron Light Lab LNLS, BR-13083970 Campinas, SP - Brazil
[2] Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 - USA
[3] Univ Prebiteriana Mackenzie, MackGraphe Graphene & Nanomat Res Ctr, BR-01302907 Sao Paulo, SP - Brazil
[4] PTB, Abbestr 2-12, D-10587 Berlin - Germany
Número total de Afiliações: 4
Tipo de documento: Artigo de Revisão
Fonte: ADVANCED OPTICAL MATERIALS; v. 8, n. 5, SI DEC 2019.
Citações Web of Science: 0
Resumo

Polaritons, which are quasiparticles composed of a photon coupled to an electric or magnetic dipole, are a major focus in nanophotonic research of van der Waals (vdW) crystals and their derived 2D materials. For the variety of existing vdW materials, polaritons can be active in a broad range of the electromagnetic spectrum (meVs to eVs) and exhibit momenta much higher than the corresponding free-space radiation. Hence, the use of high momentum broadband sources or probes is imperative to excite those quasiparticles and measure the frequency-momentum dispersion relations, which provide insights into polariton dynamics. Synchrotron infrared nanospectroscopy (SINS) is a technique that combines the nanoscale spatial resolution of scattering-type scanning near-field optical microscopy with ultrabroadband synchrotron infrared radiation, making it highly suitable to probe and characterize a variety of vdW polaritons. Here, the advances enabled by SINS on the study of key photonic attributes of far- and mid-infrared plasmon- and phonon-polaritons in vdW and 2D crystals are reviewed. In that context the SINS technique is comprehensively described and it is demonstrated how fundamental polaritonic properties are retrieved for a range of atomically thin systems including hBN, MoS2, graphene and 2D heterostructures. (AU)

Processo FAPESP: 15/11779-4 - Efeitos plasmônicos e não-lineares em grafeno acoplado a guias de onda ópticos
Beneficiário:Christiano José Santiago de Matos
Linha de fomento: Auxílio à Pesquisa - Temático
Processo FAPESP: 12/50259-8 - Grafeno: fotônica e opto-eletrônica: colaboração UPM-NUS
Beneficiário:Antonio Helio de Castro Neto
Linha de fomento: Auxílio à Pesquisa - Programa SPEC
Processo FAPESP: 18/07276-5 - Biodetecção plasmônica no infra-vermelho médio e longínquo usando grafeno
Beneficiário:Christiano José Santiago de Matos
Linha de fomento: Auxílio à Pesquisa - Regular