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Estudos por espectroscopia Raman da heteroestrutura semicondutora InxGa1-xP/GaAs.
(Universidade Federal de São Carlos, 2005-03-24)
In this work, the technique Raman spectroscopy is used in order to study
InxGa1-xP films grown with different thickness on GaAs (001). Two sets of samples grown
by CBE (Chemical Beam Epitaxy) were analized: the first a ...
Influência de solutos intersticiais em nióbio e ligas nióbio-zircônio.
(Universidade Federal de São Carlos, 2005-07-20)
Metals of body-centered cubic structure that contain heavy interstitial solutes, such as oxygen
and nitrogen in solid solution, present anelastic relaxation peaks when submitted to cyclic tensions,
due to the process called ...
Espectroscopia Mössbauer aplicada ao estudo da liga aço baixo carbono-Al nitretada.
(Universidade Federal de São Carlos, 2005-03-18)
We presented in this work a study of the influence of the thickness of Al thin film
deposited in substratum of low carbon steel. Alloys of steel low carbon and
aluminum are used broadly in automobile and aerospace industries. ...
Cálculos de primeiros princípios para BaO.
(Universidade Federal de São Carlos, 2005-02-28)
In this work we present first principles calculations with Density Functional Theory,
DFT, using norm-conserving pseudopotentials. Initially, we perform calculations
of structural properties for metallic barium, Ba, in the ...
Um modelo consistente para o processo de fotocontagem contínua e medidas de emaranhamento de sistemas quânticos de variáveis contínuas.
(Universidade Federal de São Carlos, 2005-02-10)
This dissertation embraces two trends of research in modern quantum optics. The first of
them is connected to the photodetection theory, particularly to the continuous measurement
theory developed by Srinivas and Davies ...
Abordagem via integrais de trajetória do processo de troca e dissipação de energia num sistema composto por dois osciladores harmônicos dissipativos acoplados - o modelo duplicado de Caldeira & Leggett.
(Universidade Federal de São Carlos, 2005-03-11)
In this work, we analyse the dissipation and interchange of energy in a
system composed by two harmonic oscillators, each one associated with a thermal
reservoir.
To this end, we employ the Caldeira & Leggett approach, ...
Solução de um modelo de vértices assimétrico de três estados.
(Universidade Federal de São Carlos, 2005-03-29)
In this work we first review some of the techniques relevant to the theory of two-dimensional integrable models. We apply the Quantum Inverse Scattering approach to a class of three-state vertex model with both closed and ...
Estudo dos efeitos de colisões atômicas na dinâmica, nas propriedades estatíticas e no emaranhamento entre átomos aprisionados interagindo com a luz.
(Universidade Federal de São Carlos, 2005-03-10)
In this work we consider a trapped Bose-Einstein Condensate interacting simultaneously with a high quality cavity quantized field and a classical undepleted laser field. Collisions
between atoms are taken into account by ...
Estudo por espectroscopia Raman de efeitos de localização das excitações elementares em superredes e em ligas dopadas.
(Universidade Federal de São Carlos, 2005-03-22)
In the present work, the localization properties of the single-particle and collective excitations subjected to a random potential in the AlGaAsSi alloys and in the intentionally disordered GaAs/AlGaAs:Si superlattices (SL ...
Nanoarquitetura em sistemas de alumina anódica porosa e configurações magnéticas de partículas de Co eletrodepositadas.
(Universidade Federal de São Carlos, 2005-10-30)
This thesis presents results on tailoring porous anodic alumina films, the Co-CoO electrodeposition on alumina template and the magnetic behavior of such system. Mono and bi-modal pore distribution at the film surface were ...