Zobrazeno 1 - 10
of 68
pro vyhledávání: '"Manoel Silva de Vasconcelos"'
Publikováno v:
Repositório Institucional da UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
Magnetic phases of holmium films are associated with the intensity of the magnetic neutron scattering. It is shown that each magnetic phase of the system (fan, helifan, spin-slip, helix and ferromagnetic) exhibits a characteristic profile of scatteri
Publikováno v:
Optical Materials. 89:623-629
In this work, we have studied theoretically the optical transmissivity spectra in graphene-based quasiperiodic dielectric multilayers made of SiO2 and TiO2 which are juxtaposed in accordance with the Octonacci sequence, with a graphene monolayer betw
Autor:
V.D. Mello, Michael G. Cottam, F.A.L. Santiago, N. S. Almeida, D.H.A.L. Anselmo, Manoel Silva de Vasconcelos
Publikováno v:
Repositório Institucional da UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
The localization behavior and scaling properties of magnetostatic modes propagating on magnetic aperiodic superlattices made up by rare-earth materials is analyzed. Both surface and bulk modes are obtained, considering two different aperiodic rules o
Publikováno v:
Optical Materials. 121:111566
We study the transmittance spectra of light waves propagating on binary quasiperiodic cylindrical stackings. Such structures are called Cylindrical Photonic Quasicrystals (CPQs). In our model, Maxwell's equations are solved, and amplitudes of fields
Publikováno v:
Repositório Institucional da UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
We report a theoretical study of the magnetocaloric effect of Terbium (Tb) thin films due to finite size and surface effects in the helimagnetic phase, corresponding to a temperature range from T C =219 K to T N =231 K, for external fields of the ord
Publikováno v:
Journal of Physics: Condensed Matter. 33:315802
We present a theoretical study for the surface and bulk magnon-polaritons in magnonic crystals (or semi-infinite layered superlattices), which are formed from an array of ferromagnetic materials and nonmagnetic spacers with graphene sheets interposed
Publikováno v:
Repositório Institucional da UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
In this work we investigate the thermal power spectra of the electromagnetic radiation through one-dimensional stacks of dielectric layers, with graphene at their interfaces, arranged according to a quasiperiodic structure obeying the Fibonacci (FB),
Publikováno v:
Repositório Institucional da UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
We investigate the optical transmission spectra for $s$-polarized (TE) and $p$-polarized (TM) waves in one-dimensional photonic quasicrystals on a quasiperiodic multilayer structure made up by alternate layers of SiO$_{2}$ and \textit{metamaterials},
Autor:
Umberto L. Fulco, Roniel de Lima Araújo, Manoel Silva de Vasconcelos, José X. Lima Neto, Eudenilson L. Albuquerque, Carlos Antonio Barboza
Publikováno v:
Repositório Institucional da UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
The structural, electronic, optical, vibrational and thermodynamic properties of the anhydrous orthorhombic L-threonine crystals are investigated by ab initio simulation using a pseudopotential approach within the density functional theory (DFT) meth
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::70c12c664bfad7308433975fc36e081e
https://repositorio.ufrn.br/jspui/handle/123456789/29916
https://repositorio.ufrn.br/jspui/handle/123456789/29916
Publikováno v:
Repositório Institucional da UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
We theoretically analyze the spectrum of phonons of a one-dimensional quasiperiodic lattice. We simulate the quasicrystal from the classic system of spring-bound atoms with a force constant modulated by the Aubry-Andr\'e model, so that its value is s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9e7a669763070b99ea5539bc9eb0669d
https://repositorio.ufrn.br/jspui/handle/123456789/29913
https://repositorio.ufrn.br/jspui/handle/123456789/29913