Zobrazeno 1 - 10
of 182
pro vyhledávání: '"E. C. F. da Silva"'
Publikováno v:
Superlattices and Microstructures. 104:232-239
We developed a method to calculate the dark current of quantum-well infrared photodetectors without the need to fit any experimental data or to perform extra transport measurements on other samples. The temperature range of the calculations was exten
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f491ba1bd0d3ed6e6e346042a2cf6204
https://doi.org/10.1016/j.spmi.2017.02.015
https://doi.org/10.1016/j.spmi.2017.02.015
Autor:
H. Iwamoto, E. C. F. da Silva, Edson Laureto, M.A.T. da Silva, A. A. Quivy, Ivan Frederico Lupiano Dias, V. M. de Aquino
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
In the present paper it is demonstrated that the bound electronic states of multiple quantum wells structures may be calculated very efficiently by expanding their eigenstates in terms of the eigenfunctions of a particle in a box. The bound states of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::546ccc3287096f3b18d6d0132ea3084a
https://doi.org/10.1016/j.spmi.2016.11.042
https://doi.org/10.1016/j.spmi.2016.11.042
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
We report on a high responsivity at zero bias in infrared photodetectors based on InAlAs quantum dots due to the formation of an Al-rich wetting layer which acts as an electron barrier. This layer has a larger bandgap and results from the low segrega
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f6cfcc01a2aa6a5e00a688fdcd0a968a
https://doi.org/10.1016/j.sna.2020.112262
https://doi.org/10.1016/j.sna.2020.112262
Autor:
R R O Morais, Sidney A. Lourenço, José Leonil Duarte, A. A. Quivy, Ivan Frederico Lupiano Dias, Edson Laureto, E. C. F. da Silva
Publikováno v:
Brazilian Journal of Physics. 40:15-21
In this work we report on a comparison of some theoretical models usually used to fit the dependence on temperature of the fundamental energy gap of semiconductor materials. We used in our investigations the theoretical models of Vi˜ na, P¨ assler-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::232a989d2a5747d0c8717633585ba4a7
https://doi.org/10.1590/s0103-97332010000100003
https://doi.org/10.1590/s0103-97332010000100003
Publikováno v:
International Journal of Quantum Chemistry. 36:693-699
The Green's function technique within the framework of a valence-force-field Hamiltonian has been used to study the vibrational properties of the donor–hydrogen complexes, for the donors P, As, and Sb in silicon. The A1 and E vibrational energies o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::77a66c628740680262cac8874c930799
https://doi.org/10.1002/qua.560360871
https://doi.org/10.1002/qua.560360871
Autor:
F. A. Marcus, Marisa Roberto, Tiago Kroetz, Iberê L. Caldas, Ricardo L. Viana, E. C. F. da Silva
Publikováno v:
Computer Physics Communications. 180:642-650
For magnetically confined plasmas in tokamaks, we have numerically investigated how Lagrangian chaos at the plasma edge affects the plasma confinement. Initially, we have considered the chaotic motion of particles in an equilibrium electric field wit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::02578580a1222fab75d706e6ecb96806
https://doi.org/10.1016/j.cpc.2008.12.025
https://doi.org/10.1016/j.cpc.2008.12.025
Publikováno v:
Journal of Crystal Growth. 278:103-107
Uncapped InAs/GaAs quantum dots with an average height of 14 nm were obtained combining a low growth rate (0.01 ML/s) and a high substrate temperature (520 °C) during molecular beam epitaxy of InAs on GaAs(0 0 1). This achievement of a very narrow d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::90fbbc30d868178ff0440432afa7b2e4
https://doi.org/10.1016/j.jcrysgro.2004.12.118
https://doi.org/10.1016/j.jcrysgro.2004.12.118
Publikováno v:
Brazilian Journal of Physics. 34:1759-1765
The structure of magnetic field lines in a tokamak with reversed magnetic shear is investigated by means of analytically derived area-preserving non-twist Poincare maps. The basic configuration is the magnetic field produced by an ergodic limiter, su
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b8643e3496fb3eefd37639a03d9655de
https://doi.org/10.1590/s0103-97332004000800046
https://doi.org/10.1590/s0103-97332004000800046
Publikováno v:
Physica A: Statistical Mechanics and its Applications. 342:363-369
We investigated the structure of magnetic field lines in a tokamak with reversed magnetic shear and non-symmetric perturbations by means of analytically derived area-preserving non-twist Poincare maps. The maps are used to study magnetic island dimer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c588239dc0e80ce1dfc72133e14fc85e
https://doi.org/10.1016/j.physa.2004.04.095
https://doi.org/10.1016/j.physa.2004.04.095
Publikováno v:
physica status solidi (c). 1:S133-S140
We report on the optical and morphological properties of self-assembled InAs quantum dots deposited on GaAs(001) substrates by molecular beam epitaxy using a combination of extreme growth combinations as low InAs growth rate, high-temperature InAs de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b48f836d1f153234bff5d799c868ef7a
https://doi.org/10.1002/pssc.200405132
https://doi.org/10.1002/pssc.200405132