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Now showing items 131-140 of 337
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 ...
Equação mestra não-linear aplicada ao estudo de bioestabilidade óptica.
(Universidade Federal de São Carlos, 2004-08-12)
In this dissertation, we present a generalized master equation for a system of N two-
level atoms pumped by a classical field, interacting with a reservoir. The kinds of reservoirs
are assumed: (a) thermal, (b) squeezed ...
Relação entre os métodos de síntese de precursores particulados ferroicos e a obtenção de compósitos magnetoelétricos texturados
(Universidade Federal de São Carlos, 2015-09-04)
This study analyses the relationships between synthesis routes and physical properties of the composite system 67.5(PbMg1/3Nb2/3O3) +32.5(PbTiO3), or simply PMN-PT, as ferroelectric phase and BaFe12O19, or BaM, as magnetic ...
Propriedades estruturais e magnéticas do isolante topológico Bi2Se3 com aglomerados de FexSey
(Universidade Federal de São Carlos, 2016-03-29)
In this work, we discuss the growth of Fe containing Bi2 Se3epilayers on the
GaAs(111) substrate by molecular beam epitaxy (MBE) with Fe contents of in the 8-
20% range. It is shown that Bi2 Se3 film thin are grown with ...
Teletransporte quântico na presença de ruído
(Universidade Federal de São Carlos, 2016-04-01)
The main focus of this work is to explore the feasibility of conducting the
teleportation protocol in scenarios where the presence of an external environment
reduces the purity of the input state and the transmission ...
Armadilha Óptica de Dipolo para 88Sr
(Universidade Federal de São Carlos, 2019-02-28)
In this work, we present the study of light and matter interaction through the building and operation of a cold atoms experiment. The motivation is to study light scattering in the dense regime, where this phenomenon becomes ...
Transição de fase quântica e modelos de spins frustrados
(Universidade Federal de São Carlos, 2007-03-15)
In this thesis, we will study the quantum phase transition of frustrated quantum spin
models: (i) van Hemmen model ( S = 1) with transverse and anisotropic biaxial field (ii)
Heisenberg model (S = 1/2 ) with competitive ...
Mecânica quântica no espaço de fase não-comutativo e aplicações em termodinâmica
(Universidade Federal de São Carlos, 2016-08-26)
In this work we study theoretical aspects arising from the fact of considering a
quantum theory with general relations of noncommutativity. Through the quantum
mechanics in phase-space formalism in the Wigner-Weyl ...
Propriedades óticas e magneto-óticas de monocamadas de MoWSe2
(Universidade Federal de São Carlos, 2023-01-23)
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. ...
Quantum transistor using superconducting qubits
(Universidade Federal de São Carlos, 2022-09-23)
In recent times, quantum computation has become a flourishing field of research with increasing investment due to its promise to revolutionize computing, increasing the speed of information processing to levels far beyond ...