Zobrazeno 1 - 10
of 62
pro vyhledávání: '"Santos Jaime E."'
Publikováno v:
EPJ Web of Conferences, Vol 233, p 03005 (2020)
We consider the problem of the radiation losses by fast-traveling particles traversing two-dimensional (2d) materials or thin films. After review¬ing the screening of electromagnetic fields by two dimensional conducting ma¬terials, we obtain the en
Externí odkaz:
https://doaj.org/article/07a9d1944a3a49e2b8819505a5a8fc6d
Autor:
Alexandre, Bruno S. C., Martins, Luís C., Santos, Jaime E., Pontes, António J., Peres, Nuno M. R.
Publikováno v:
The European Physical Journal B volume 93, Article number: 119 (2020)
We revisit the classical problem of electromagnetic wave refraction from a lossless dielectric to a lossy conductor, where both media are considered to be non-magnetic, linear, isotropic and homogeneous. We derive the Fresnel coefficients of the syst
Externí odkaz:
http://arxiv.org/abs/1911.12306
Publikováno v:
Nanoscale, 2019, 11, 10273-10281
Creation of sharp lateral p-n junctions in graphene devices, with transition widths well below the Fermi wavelength of graphene charge carriers, is vital to study and exploit these electronic systems for electron-optical applications. The achievement
Externí odkaz:
http://arxiv.org/abs/1911.06631
Publikováno v:
New Journal of Physics, vol. 18 (2016) 023007
We propose an experimental setup to measure the work performed in a normal-metal/insulator/superconducting (NIS) junction, subjected to a voltage change and in contact with a thermal bath. We compute the performed work and argue that the associated h
Externí odkaz:
http://arxiv.org/abs/1506.02905
Publikováno v:
Phys. Rev. B 90, 235420 (2014)
We study the electromagnetic properties of a metamaterial consisting of polarizable (nano)particles and a single graphene sheet placed at the interface between two dielectrics. We show that the particle's polarizability is renormalized because of the
Externí odkaz:
http://arxiv.org/abs/1409.7326
Publikováno v:
Phys. Rev. B 90, 125425 (2014)
We use an exact solution of the relaxation-time Boltzmann equation in a uniform AC electric field to describe the nonlinear optical response of graphene in the terahertz (THz). The cases of monolayer, bilayer and ABA-stacked trilayer graphene are con
Externí odkaz:
http://arxiv.org/abs/1406.5889
Autor:
Peres, N. M. R., Santos, Jaime E.
Publikováno v:
2013 J. Phys.: Condens. Matter 25 305801
The bulk states of some materials, such as topological insulators, are described by a modified Dirac equation. Such systems may have trivial and non-trivial phases. In this paper, we show that in the non-trivial phase a strong light-matter interactio
Externí odkaz:
http://arxiv.org/abs/1307.1278
Publikováno v:
Phys. Rev. B 87, 134204 (2013)
We construct a three-color Potts-like model for the graphene zigzag edge reconstructed with Stone-Wales carbon rings, in order to study its thermal equilibrium properties. We consider two cases which have different ground-states: the edge with non-pa
Externí odkaz:
http://arxiv.org/abs/1209.5346
Publikováno v:
Phys. Rev. B 84, 085430 (2011)
We perform a phenomenological analysis of the problem of the electronic doping of a graphene sheet by deposited transition metal atoms, which aggregate in clusters. The sample is placed in a capacitor device such that the electronic doping of graphen
Externí odkaz:
http://arxiv.org/abs/1104.4729
We examine the mathematical and physical significance of the spectral density sigma(w) introduced by Ford in Phys. Rev. D38, 528 (1988), defining the contribution of each frequency to the renormalised energy density of a quantum field. Firstly, by co
Externí odkaz:
http://arxiv.org/abs/1012.1140