Zobrazeno 1 - 10
of 1 455
pro vyhledávání: '"Peres, A. M."'
This paper explores the application of quantum-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 from the Wigner distr
Externí odkaz:
http://arxiv.org/abs/2412.07903
Autor:
Eini, Tomer, Quintela, M. F. C. Martins, Henriques, J. C. G., Ribeiro, R. M., Mazor, Yarden, Peres, N. M. R., Epstein, Itai
Collective excitations of charged particles in response to electromagnetic fields give rise to a rich variety of hybrid light-matter quasiparticles with unique properties. In metals, intraband collective response characterized by negative permittivit
Externí odkaz:
http://arxiv.org/abs/2412.03139
Autor:
Castilla, Sebastián, Agarwal, Hitesh, Vangelidis, Ioannis, Bludov, Yuliy, Iranzo, David Alcaraz, Grabulosa, Adrià, Ceccanti, Matteo, Vasilevskiy, Mikhail I., Kumar, Roshan Krishna, Janzen, Eli, Edgar, James H., Watanabe, Kenji, Taniguchi, Takashi, Peres, Nuno M. R., Lidorikis, Elefterios, Koppens, Frank H. L.
Publikováno v:
Nature Communications (2024)
One of the most captivating properties of polaritons is their capacity to confine light at the nanoscale. This confinement is even more extreme in two-dimensional (2D) materials. 2D polaritons have been investigated by optical measurements using an e
Externí odkaz:
http://arxiv.org/abs/2409.18888
Autor:
Yamanaka, Muriki G., de Almeida, Diogo H., de Almeida, Paulo R. Lisboa, Dominico, Simone, Peres, Leticia M., Sunye, Marcos S., de Almeida, Eduardo C.
Publicly available datasets are subject to new versions, with each new version potentially reflecting changes to the data. These changes may involve adding or removing attributes, changing data types, and modifying values or their semantics. Integrat
Externí odkaz:
http://arxiv.org/abs/2407.09885
Biased bilayer graphene (BBG) is an important system for studies of excitonic effects in graphene--based systems, with its easily tunable bandgap. This bandgap is governed by an external gate voltage, allowing one to tune the optical response of the
Externí odkaz:
http://arxiv.org/abs/2405.04894
Publikováno v:
Journal of Optics 26, 125001 (2024)
In this paper we study the topology of the bands of a plasmonic crystal composed of graphene and of a metallic grating. Firstly, we derive a Kronig-Penney type of equation for the plasmonic bands as function of the Bloch wavevector and discuss the pr
Externí odkaz:
http://arxiv.org/abs/2404.19576
Magnetized ferromagnetic disks or wires support strong inhomogeneous fields in their borders. Such magnetic fields create an effective potential, due to Zeeman and diamagnetic contributions, that can localize charge carriers. For the case of two-dime
Externí odkaz:
http://arxiv.org/abs/2403.04404
Publikováno v:
Journal of the Optical Society of America B 41, 626 (2024)
In this paper a thorough theoretical study of a new class of collective excitations, dubbed hyperbolic surface phonon plasmon polaritons, is performed. This new type of light-matter excitations are shown to have unique properties that allows to explo
Externí odkaz:
http://arxiv.org/abs/2403.00722
Publikováno v:
Phys. Rev. B 109, 195427, Published 21 May 2024
In this paper we discussed the topological transition between trivial and nontrivial phases of a quasi-periodic (Aubry-Andr\'e like) mechanical Su-Schrieffer-Heeger (SSH) model. We find that there exists a nontrivial boundary separating the two topol
Externí odkaz:
http://arxiv.org/abs/2402.05651
Publikováno v:
Phys. Rev. B 109, 195436 (2024)
We construct a one-dimensional (1D) topological SSH-like model with chiral symmetry and a superimposed hopping modulation, which we call the chiral Aubry-Andr\'e model. We show that its topological properties can be described in terms of a pair (C,W)
Externí odkaz:
http://arxiv.org/abs/2401.03541