Zobrazeno 1 - 10
of 64
pro vyhledávání: '"P.C.M. Machado"'
Autor:
K.F. Vaz, P.C.M. Machado
Publikováno v:
Trends in Computational and Applied Mathematics, Vol 5, Iss 1 (2004)
Na simulação de dispositivos semicondutores são obtidos sistemas de equações em que as matrizes possuem dimensões elevadas, são esparsas, assimétricas e mal-condicionadas. Neste trabalho, apresentaremos como a solução desses sistemas é inf
Externí odkaz:
https://doaj.org/article/8a497189c43c432ea62ef3d6d71b8bd6
Publikováno v:
Physica E: Low-dimensional Systems and Nanostructures. 44:1361-1366
In this work we calculate the donor binding energy of a hydrogenic donor impurity located in the center of a GaAs–AlxGa1−xAs circular quantum dot. The electron wave functions are obtained analytically by solving the Schrodinger equation and the i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6960527a129b179ebad9f350eafaf20d
https://doi.org/10.1016/j.physe.2012.02.019
https://doi.org/10.1016/j.physe.2012.02.019
Publikováno v:
Physics Procedia. 28:44-47
The donor binding energy of a hydrogenic donor impurity located in the center of a GaAs-AlxGa1-xAs circular quantum dot is calculated by solving analytically the Schrodinger equation. The electron wave functions and the impurity energy levels are det
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d553cf3d1eb23027c74bfe424521010d
Publikováno v:
physica status solidi (b). 248:931-936
In this work, we investigate the plasmon–LO phonon interaction effects on the intrasubband structure factor, electron–electron effective potential, and plasmon energy associated with the lowest subband in a GaAs-AlGaAs rectangular quantum-well wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48025c043afd7eee28f9457d0457dc90
https://doi.org/10.1002/pssb.201046242
https://doi.org/10.1002/pssb.201046242
Autor:
P.C.M. Machado, J.W.L. Nerys, Sérgio Araújo de Figueiredo, Mara Grace Silva Figueiredo, L. R. Lisita
Publikováno v:
Holos, Vol 3, Iss 0, Pp 58-68 (2010)
HOLOS; v. 3 (2010); 58-68
Holos
Instituto Federal do Rio Grande do Norte (IFRN)
instacron:IFRN
HOLOS; v. 3 (2010); 58-68
Holos
Instituto Federal do Rio Grande do Norte (IFRN)
instacron:IFRN
Os ensaios tradicionais para levantamento de parâmetros em motor de indução trifásico utilizam equipamentos de medição muitas vezes não confiáveis e de baixa precisão e quase nunca são realizadas medições em tempo real, podendo levar a er
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::01daa8fb4169875b749cd571f547dd4a
http://www2.ifrn.edu.br/ojs/index.php/HOLOS/article/view/402
http://www2.ifrn.edu.br/ojs/index.php/HOLOS/article/view/402
Autor:
Getulio de Deus, P.C.M. Machado, Yroá R. Ferreira, Rodrigo Pinto Lemos, Diego Burgos, Jonas Kunzler, Hugo Silva
Publikováno v:
LASCAS
The SEAD method relies on the Differential Spectrum to provide accurate DOA estimation even at very low values of SNR. However, calculating the Differential Spectrum requires performing successive SVD for each test angle in a scanning range. Recently
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6fd74a666ed65b31380edd9f4e9a33a4
https://doi.org/10.1109/lascas.2015.7250423
https://doi.org/10.1109/lascas.2015.7250423
Publikováno v:
Solid State Communications. 130:95-99
We report a calculation of the electron–phonon interaction effects on the 1s→2p± transition energies of a donor impurity present in a GaN-bulk in the presence of an external magnetic field. The energy levels are calculated through a variational
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c63a30c88730ec99183a51fbbd240c6
https://doi.org/10.1016/j.ssc.2004.01.002
https://doi.org/10.1016/j.ssc.2004.01.002
Publikováno v:
Microelectronics Journal. 34:599-602
The effects of a discrete random dopant distribution on the MESFET characteristics were investigated using device simulation. The first three moments of the Boltzmann equation coupled to the Poisson equation are solved self-consistently. The model ac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2cc6d86bd1f69387d22ed2bbb7dc8b91
https://doi.org/10.1016/s0026-2692(03)00058-2
https://doi.org/10.1016/s0026-2692(03)00058-2
Publikováno v:
physica status solidi (b). 232:76-80
The intrasubband pair-correlation function, g(x), for a quasi-one-dimensional electron gas confined in a GaAs-Al x Ga 1-x As rectangular quantum wire within the random-phase approximation (RPA) is calculated for several values of the potential barrie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f144fc0732b5f62a7521333290f602c7
https://doi.org/10.1002/1521-3951(200207)232:1<76::aid-pssb76>3.0.co
https://doi.org/10.1002/1521-3951(200207)232:1<76::aid-pssb76>3.0.co
Publikováno v:
Microelectronics Journal. 40:799-801
In this work we present a study of the plasmon-longitudinal-optical (LO) phonon collective excitation as a function of the quasi-one-dimensional wave vector for several electronic densities and thickness of the wires. We observed that the intra- and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::287f27b16ee1bbe2711884c8331fc47b
https://doi.org/10.1016/j.mejo.2008.11.033
https://doi.org/10.1016/j.mejo.2008.11.033