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Dinâmica dissipativa em sistemas quânticos fortemente interagentes
(Universidade Federal de São Carlos, 2019-12-06)
In this thesis we investigate the dissipative dynamics in strongly interacting quantum
systems. The dissipative dynamics that we investigate has relevance in the generation
of non-classic states of light, such as the ...
Análise de fenômenos críticos no modelo Rock-Paper-Scissors
(Universidade Federal de São Carlos, 2019-07-03)
This present work was developed with the purpose of analyzing critical phenomena in
the Rock-Paper-Scissors model, consisting of three species and the empty site, initially
distributed randomly in a square lattice, in ...
Propriedades magneto-óticas e de magneto-transporte de um diodo de tunelamento ressonante contendo Si δ - doping no poço quântico
(Universidade Federal de São Carlos, 2011-03-11)
In this work, we have studied the transport and optical properties of GaAs = AlGaAs resonant tunneling diodes with Si delta-doping at the center of the quantum well. We have studied magneto-transport and polarized resolved ...
Síntese e caraterização de MgxPb(1-x)TiO3
(Universidade Federal de São Carlos, 2015-08-14)
We report the investigation of structural, optical and electrical properties of the MgxPb(1-
x)TiO3 ceramic system produced by mechanosynthesis. The solid state reaction
manufacturing method has been proved to be an ...
Domínios ferroelétricos em cerâmicas e materiais nanoestruturados: investigação por microscopia de piezoresposta
(Universidade Federal de São Carlos, 2011-12-07)
In this work, ferroelectric domain structure was investigated by Piezoresponse Force Microscopy (PFM). To this, an Atomic Force Microscope (AFM) has been modified to use it as PFM at room temperature and at high temperatures. ...
Relações estrutura: propriedades como subsídio à elucidação do diagrama de fases do sistema ferroelétrico (Pb,Ca)TiO3
(Universidade Federal de São Carlos, 2013-02-28)
Solid solutions with perovskite structure, especially lead-based oxides, have been developed and investigated as single crystal and/or polycrystal ceramics since the midtwentieth century, but aspects of phase diagram of ...
Análise de transformações de fases nas ligas Ti-35Nb-7Zr e Ti-xNb-3Fe por espectroscopia mecânica
(Universidade Federal de São Carlos, 2013-11-14)
In recent decades the study of β-Titanium alloys are attracting the interest to the biomaterials science community in general, since have improved properties as compared with current commercial biomedical alloys which ...
Redes de osciladores dissipativos: o modelo duplicado de Caldeira-Leggett, transferência quase-perfeita de estados e recoerência
(Universidade Federal de São Carlos, 2010-02-25)
In this work we treat firstly what we call the double Caldeira-Leggett model, which consists on the approach to the dynamics of two dissipative harmonic oscillators via Feynman-Vernon theory. We derived and solved the ...
Efeitos de parâmetros de crescimento nas propriedades ópticas de filmes finos de ZnO:Er
(Universidade Federal de São Carlos, 2019-12-19)
We report a systematic study on the structural, morphological and optical properties of Er-doped ZnO thin films grown by Spray Pyrolysis. The films were deposited on glass substrates between 230ºC - 300ºC, using as precursors ...
Development of seminconductor nanowire materials for electronic and photonics applications
(Universidade Federal de São Carlos, 2019-12-05)
The thesis is concerned with study of GaAs nanowires fabricated on Si substrate.
The possibility of growing III-V semiconductor materials directly on silicon in the
form of nanowires is an attractive route to the integration ...