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Propriedades de sistemas de pontos quânticos semicondutores acoplados e sua resposta óptica
(Universidade Federal de São Carlos, 2017-10-31)
The study of doped semiconductor quantum dots with magnetic impurities has been a challenging task when adding spin-orbit coupling and exchange interaction with asymmetry effects. The combination of all these factors within ...
Electronic and optical properties of Quasi-2D nanostructures and exfoliated systems
(Universidade Federal de São Carlos, 2017-10-30)
This thesis is aiming to study, according to a theoretical approaches, the electronic and optical properties of quasi-2D semiconductor quantum systems. Using the k · p model as basis we obtained a satisfactory set of results ...
Visualização, caracterização e manipulação de paredes de domínios em filmes finos ferroelétricos
(Universidade Federal de São Carlos, 2017-08-10)
In this work, conductivity in ferroelectric domain walls, in materials whose domains are insulating, was investigated at the nanoscale using a combination of techniques based on atomic force microscopy. Polycrystalline and ...
Propriedades eletrônicas e espectroscópicas de aglomerados de moléculas interestelares
(Universidade Federal de São Carlos, 2013-08-29)
The interstellar médium (ISM) is a gigantic reservoir of atoms and molecules of different shapes and sizes. In general, they are concentrated in enormously big regions in space known as interstellar cloud. There exist huge ...
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 ...
Do geocentrismo à gravitação universal: proposta e implementação de uma sequência didática para o ensino médio
(Universidade Federal de São Carlos, 2016-08-18)
This work is formed by the development and implementation of an Educational Product, which by means of a didactic sequence (DS), aimed to address geocentrism, heliocentrism and universal gravitation topics in a less classical ...
Estudo das propriedades estruturais, elétricas e ópticas de filmes finos de Niobato de Sódio e Potássio (KNN), fabricados por deposição a laser pulsado (PLD)
(Universidade Federal de São Carlos, 2017-05-05)
Environmental problems arising from lead toxicity in materials, such as those in lead zirconate titanate (PZT) have stimulate the search for new lead-free ferroelectrics materials with ferroelectric and piezoelectric ...
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 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 ...
Comunicação quântica baseada no teletransporte em variáveis contínuas
(Universidade Federal de São Carlos, 2014-12-12)
In this Thesis we study in details one of the most astonishing application of quantum mechanics which totally departs from our common sense: quantum teleportation in continuous variables. We present a review of the postulates ...