Acceleration of Subwavelength Polaritons by Engineering Dielectric-Metallic Substrates

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorBrazilian Center for Research in Energy and Materials (CNPEM)-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorUniversidade Estadual de Campinas (UNICAMP)-
Autor(es): dc.creatorFeres, Flávio H.-
Autor(es): dc.creatorFeres, Flávio H. [UNESP]-
Autor(es): dc.creatorMayer, Rafael A.-
Autor(es): dc.creatorBarcelos, Ingrid D.-
Autor(es): dc.creatorFreitas, Raul O.-
Autor(es): dc.creatorMaia, Francisco C. B.-
Data de aceite: dc.date.accessioned2022-02-22T00:26:22Z-
Data de disponibilização: dc.date.available2022-02-22T00:26:22Z-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-06-17-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1021/acsphotonics.0c00563-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/199063-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/199063-
Descrição: dc.descriptionBy synchrotron infrared nanospectroscopy, we demonstrate modulation of momentum and group velocity of subdiffractional hyperbolic phonon-polaritons (HP2), in hexagonal boron nitride nanocrystals, by varying the SiO2 film thickness in the hBN/SiO2/Au heterostructure. We reveal acceleration of the HP2 pulse in a hBN/(SiO2 wedge)/Au heterostructure with gradient of the SiO2 thickness. The acceleration is explained by a semiclassical modeling considering the polariton pulse as a free quantum particle with effective mass dependent on its group velocity. In quantitative agreement with simulations and semiempirical analysis, the modeling predicts an average acceleration of 1.5 × 1018 m·s-2 close to that of ∼1.45 × 1018 m·s-2 obtained from experimental inputs. From the fundamental aspect, the polariton acceleration allows discussing the undulatory-corpuscular behavior of polariton quasi-particles. The acceleration induced by the wedge is a general effect that can provide for control of the polariton pulse dynamics, which is compelling for future polaritonic devices.-
Descrição: dc.descriptionBrazilian Synchrotron Light Laboratory (LNLS) Brazilian Center for Research in Energy and Materials (CNPEM)-
Descrição: dc.descriptionPhysics Department Institute of Geosciences and Exact Sciences São Paulo State University - UNESP-
Descrição: dc.descriptionPhysics Department Gleb Wataghin Physics Institute University of Campinas (Unicamp)-
Descrição: dc.descriptionPhysics Department Institute of Geosciences and Exact Sciences São Paulo State University - UNESP-
Formato: dc.format1396-1402-
Idioma: dc.languageen-
Relação: dc.relationACS Photonics-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectgroup velocity modulation-
Palavras-chave: dc.subjectpolariton acceleration-
Palavras-chave: dc.subjectpolariton momentum-tuning-
Palavras-chave: dc.subjectpolariton wave-particle behavior-
Palavras-chave: dc.subjectsubstrate engineering-
Palavras-chave: dc.subjectsubwavelength polariton-
Título: dc.titleAcceleration of Subwavelength Polaritons by Engineering Dielectric-Metallic Substrates-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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