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Processamento e caracterização de cerâmicas transparentes do sistema ferroelétrico PMN-PT dopado com lantânio
(Universidade Federal de São Carlos, 2011-12-17)
In this work, one of the goals was the stabilization and/or optimization of the perovskita phase in the (Pb,La)(Mg1/3Nb2/3)O3+PbTiO3 (PLMN-PT) e Pb(Mg1/3Nb2/3)O3+PbTiO3+La2O3 (PMN-PT:La) powders in order to obtain ceramics ...
Correlacões quânticas: medidas e simetrias
(Universidade Federal de São Carlos, 2011-06-17)
In this thesis, we explore two sort of quantum correlations: entanglement and quantum discord. We present a geometric method to identify and measure the degree of entanglement based on symmetries of vectors and matrices ...
Estrutura eletrônica de anéis quânticos
(Universidade Federal de São Carlos, 2011-08-09)
The nanoscopic structures with ring topology, or quantum rings, have attracted the interest due to their unique rotational symmetry and the possibility of checking fundamental quantum phenomena. Among them, the study of ...
Síntese e caracterização de compósitos multiferroicos de manganita La: Sr e titanatos de Ba e Sr
(Universidade Federal de São Carlos, 2011-03-18)
In this paper, we seek to prepare composite multiferroics extrinsic whose potential for technological applications, especially in the electronics industry, and the possibility of new phenomena of fundamental scientific ...
Efeito de absorção em espalhamento de elétrons por molécula de formaldeido
(Universidade Federal de São Carlos, 2011-10-02)
This master's project's main objective is to study the effects of absorption in the elastic scattering of electrons by molecules of formaldehyde (CH2O). We calculated differential cross sections (SCD), integral cross ...
Ensino significativo de física por projetos: campanha de economia de energia elétrica
(Universidade Federal de São Carlos, 2011-07-29)
This work presents a strategy of meaningful learning based on projects. In the education proposal, steps are suggested to the development of the general design, regardless of the subject to be studied. These steps envolve ...
A equação de Yang-Baxter para modelos de vértices com três estados
(Universidade Federal de São Carlos, 2011-03-02)
In this work we study the solutions of the Yang-Baxter equation associated to nineteen vertex models invariant by the parity-time symmetry from the perspective of algebraic geometry. We determine the form of the algebraic ...
Estudo das propriedades estruturais através de espectroscopia Raman de amostras de grafite de poucas camadas (GPC) obtidas por clivagem mecânica
(Universidade Federal de São Carlos, 2011-08-25)
In this work, We report studies on samples of graphite few layers obtained from micromechanical techniques of cleaving Manual of highly oriented pyrolytic graphite (HOPG). In order to checking the number of layers in each ...
Propriedades óticas e de transporte em heteroestruturas semicondutoras contendo GaMnAs
(Universidade Federal de São Carlos, 2011-10-14)
In this work, we have investigated Ga1-xMnxAs/GaAs/AlAs quantum wells (QWs) with low Mn concentration (x < 0.1%) grown by Molecular Beam Epitaxy at substrate temperatures of 400 and 450°C. We have investigated the time-resolved ...
Efeito Aharonov-Bohm em partículas neutras
(Universidade Federal de São Carlos, 2011-03-14)
In classical Physics, the motion of an electrically charged particle is affected only by the presence of a magnetic field if the particle enters a region of space in which the field is present. Meanwhile, in quantum Physics, ...