Recent Submissions

  • Teoria de controle ótimo aplicada a sistemas quânticos abertos 

    Fernandes, Marllos Eustáquio Fonseca (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Física - PPGF, Câmpus São Carlos, 10/11/2023)
    This thesis, grounded in the field of quantum computing, explores diverse and crucial topics for the advancement of this area. Firstly, we introduce an innovative "double-bang" solution using optimal control theory for ...
  • Propriedades magnéticas e magnetoelétricas de compósitos multiferroicos de Pb[Zr0,53Ti0,47]O3/NixCo1-xFe2O4 

    Dalla Costa, Leonardo José (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Física - PPGF, Câmpus São Carlos, 27/10/2023)
    New technologies are arising from the research and development of magnetism, especially those related to processing, information storage and sensors, are becoming increasingly important. in this regard, magnetoelectric ...
  • Modelos de branas em (5+1) dimensões e o espectro dos leptóns carregados 

    Gauy, Henrique (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Física - PPGF, Câmpus São Carlos, 27/10/2023)
    This manuscript is concerned with a mechanism for explaining the mass spectrum of the charged leptons within (5 + 1)-dimensional braneworlds. As a preliminary objective, new two co-dimensional thick braneworlds ought to ...
  • Magnetic fields as a tool to control superconducting devices 

    Chaves, Davi Araujo Dalbuquerque (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Física - PPGF, Câmpus São Carlos, 16/10/2023)
    The quantum nature and dissipation-free flow of electric currents in superconducting materials have taken a central role as technological developments push forward the necessity of new methods for processing and dealing ...
  • Funcionalidades elétricas mediadas por defeitos em óxidos semicondutores do tipo-p 

    Silva, Ana Luiza Costa (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Física - PPGF, Câmpus São Carlos, 27/10/2023)
    Structural defects, such as point defects, play an important role in the electrical transport in semiconductor oxide films. This work presents a systematic study of photoconductivity at room temperature in thin films of ...
  • Otimização dos campos de proteção nas técnicas de desacoplamento dinâmico contínuo 

    Zanni Junior, Paulo Eduardo (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Física - PPGF, Câmpus São Carlos, 15/09/2023)
    In this research project, we investigate the method known as \textit{continuous dynamical decoupling}, which is based on the use of continuously applied external fields to maximize the fidelity of quantum logical operations ...
  • Passivação de superfícies de perovskitas via dopagem substitucional 

    Torres, Israel Silva (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Física - PPGF, Câmpus São Carlos, 26/10/2023)
    Humanity currently demands new energy sources to replace polluting energy sources and thus restructure the energy matrix in a sustainable manner. In this context, materials science plays a prominent role, as new materials ...
  • Influência de Interface sobre as propriedades Ferroicas e Multiferroicas de Nanoestruturas de Pb(Zr0,2Ti0,8)O3/CoFe2O4 Crescidas via RF-Sputtering 

    Bonini, Ricardo Pereira (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Física - PPGF, Câmpus São Carlos, 11/08/2023)
    This work shows a systematic study of the structural, microstructural, ferroic and multiferroic coupling properties of bilayer thin films of the PZT/CFO system, with the constituent phases varying in thickness from 20 to ...
  • Estudo ab initio de materiais bidimensionais emergentes 

    Querne, Mateus Bazan Peters (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Física - PPGF, Câmpus São Carlos, 28/09/2023)
    Two-dimensional (2D) materials have attracted much attention in the last decade due to their unusual properties such as high degree of anisotropy and chemical flexibility. Since the isolation of a graphene layer, a wide ...
  • The memristive response in solids 

    Silva, Rafael Schio Wengenroth (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Física - PPGF, Câmpus São Carlos, 07/08/2023)
    In this Master Thesis, we have investigated basic ingredients of the theory of solid state transport, namely the Drude like conductivity and the activation of nonequilibrium charge carriers subjected to a relaxation time, ...
  • Platforms based on semiconductors for application in quantum computing 

    Cunha, Iann (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Física - PPGF, Câmpus São Carlos, 02/06/2023)
    This thesis is composed of three parts. In the first part, a study of transport in semiconductor nanowires is carried out, in which the multichannel scattering occurs in a certain finite region, providing a reentrance in ...
  • Influência dos defeitos nas funcionalidades elétricas de ZnO, AgO e polianilina 

    de Paiva, Aline Bastos (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Física - PPGF, Câmpus São Carlos, 03/03/2023)
    The optical and electrical properties in a semiconductor can be modeled by structural defects. In this thesis, we study the influence of defects on the optical and electronic properties of organic and inorganic semiconductors ...
  • Relaxação de spin em nanoestruturas semicondutoras 0 e 2D 

    Laurindo, Vanderli Junior (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Física - PPGF, Câmpus São Carlos, 01/03/2023)
    This thesis contains a compilation of the work developed and is divided into three main parts. The first part describes the homogeneous and inhomogeneous decoherence mechanisms of excitons in GaAs/AlGaAs quantum wells. ...
  • Electromigration of multiterminal transport bridges 

    Abbey, Elijah Anertey (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Física - PPGF, Câmpus São Carlos, 09/03/2023)
    With the continued miniaturization of integrated circuits (ICs), the case of metallic tracks subjected to stress caused by transport currents has become a matter of increasing concern, as it puts at risk the reliability ...
  • Theoretical and experimental investigation on the visible-light controlled functional properties in charged domain wall ferroelectrics 

    Ordoñez Pimentel, Jonathan (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Física - PPGF, Câmpus São Carlos, 13/04/2023)
    Optical control of ferroelectric properties have been attracted a growing interest as an alternative to the conventional control by applied electric fields. However, the major drawback for achieving an effective reversible ...
  • Estudos in sı́lico de proteı́nas alostéricas e sua interação com ligantes 

    Freire, Thales Souza (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Física - PPGF, Câmpus São Carlos, 24/02/2023)
    Allosteric proteins are extremely important for the regulation of several functions in the organism, such as the transport of molecules through the blood and cell membranes, as well as the phosphorylation of other proteins. ...
  • Ultracold bosons in random lattice potentials 

    Souza, Renan da Silva (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Física - PPGF, Câmpus São Carlos, 06/04/2023)
    The Bose-Hubbard model describes short-range interacting spinless bosons on a random lattice. This model is realized in ultracold atomic systems where quantum phase transitions can be observed. When loaded into a deep ...
  • Propriedades óticas e magneto-óticas de monocamadas de MoWSe2 

    Rabahi, César Ricardo (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Física - PPGF, Câmpus São Carlos, 23/01/2023)
    Two-dimensional (2D) semiconductors, such as transition-metal dichalcogenide (TMD) monolayers, have attracted intense interest in the last years because of their direct band gaps, valley properties and excitonic effects. ...
  • Blockade and antiblockade effects with near-ground state neutral atoms 

    Attie, Jorge Antonio Gonçalves (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Física - PPGF, Câmpus São Carlos, 06/09/2022)
    In this work we study the photon blockade and antiblockade effects in a system of neutral atoms with a two-level structure, in the limit where induced dipole-dipole interactions mediated by light are relevant. Such system ...
  • Electromagnetically induced transparency under effects of light-mediated interactions, entanglement generation, and Fock states detection 

    Oliveira, Murilo Henrique de (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Física - PPGF, Câmpus São Carlos, 25/10/2022)
    This thesis presents a brief compilation of the works developed during my doctorate, and can be divided basically into three main parts. In the first one, we show the changes caused by considering long-range interactions ...

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