| Texto completo | |
| Autor(es): |
Cardoso, Simao S.
;
Chaves, A. J.
;
Mortensen, N. Asger
;
Peres, N. M. R.
Número total de Autores: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PHYSICAL REVIEW A; v. 111, n. 4, p. 12-pg., 2025-04-07. |
| Resumo | |
This paper explores the application of Madelung hydrodynamic models to study two-dimensional electron gases, with a focus on nonlocal plasmonics and nonlinear optics. We begin by reviewing the derivation of the Madelung equations. Using the Madelung equations in conjunction with Poisson's equation, we calculate the spectrum of magnetoplasmons and the magneto-optical conductivity in the electrostatic regime, incorporating nonlocal corrections due to the Fermi pressure. In the absence of a magnetic field, we analyze nonlinear and nonlocal second-harmonic generation, demonstrating how plasmon excitation enhances this process. We further discuss the emergence of self-modulation phenomena driven by nonlinearity, leading to the renormalization of the plasmon dispersion. Notably, we show that nonlinearity amplifies nonlocal effects and, leveraging the hydrodynamic formalism, derive a simple analytic expression for the renormalized spectra. (AU) | |
| Processo FAPESP: | 22/08086-0 - Polaritons, excitons e trions em heteroestruturas de van der Waals |
| Beneficiário: | André Jorge Carvalho Chaves |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |