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Propriedades magnéticas de BiMn2O5 e Fe3O2BO3
(Universidade Federal de São Carlos, 2018-02-26)
In this work, an exploration of the synthesis and magnetoelectric properties of single-crystals of BiMn2O5 and a systematic study of the magnetic properties of Fe3O2BO3 are presented. Despite the unlike composition, both ...
Transmissão de emaranhamento através de cadeias de spins
(Universidade Federal de São Carlos, 2018-04-25)
In this thesis we studied the transmission of entangled states in unmodulated spin chains using a slight modification in the XY isotropic model (XX model) that describes a one-dimensional spin-1/2 chain. We have shown that ...
Propriedades eletrônicas de nanofios semicondutores de Fosfeto de Zinco (Zn3P2)
(Universidade Federal de São Carlos, 2018-04-20)
Zinc phosphide Zn3P2 nanowires with excellent crystalline quality were grown using the Vapor-Liquid-Solid (VLS) method with gold nanoparticles as catalysts. Single nanowire based devices were fabricated with ohmic nickel ...
Turbulência de Ondas em condensados de Bose-Einstein
(Universidade Federal de São Carlos, 2018-02-19)
In this work we used as a starting point the theory developed by Zakharov and Nazarenko for treating wave turbulence in systems
with weak non linearity such as atomic Bose-Einstein condensates with low enough temperature ...
Resposta óptica de sistemas atômicos no espaço livre ou aprisionados dentro de cavidades ópticas no regime de armadilhamento coerente de populações
(Universidade Federal de São Carlos, 2018-02-28)
The aim of this work is to study the electromagnetically induced transparency (EIT) and
the coherent population trapping (CPT) phenomena in three-level systems, such as atoms
and quantum dot molecules (QDM). The present ...
Dependência da anisotropia magnética efetiva em função da temperatura e concentração de níquel de amostras nanoparticuladas de NixCo1-xFe2O4
(Universidade Federal de São Carlos, 2018-03-07)
The study of nanoparticles has generated great interest in recent years in several areas of research. For example, multiferroic composite magnetoelectric materials, in which ferromagnetism and ferroelectricity occur ...
Estudo de dispositivos eletrônicos baseados em filmes de diamante dopados com boro
(Universidade Federal de São Carlos, 2018-01-29)
In this work, the main objective was the study of boron doped diamond films aiming the use of them as semiconductor material for electronic devices. Schottky diodes and a field effect transistor were the devices built with ...
Otimização do controle de Diatraea saccharalis (Fabricius, 1794) (Lepidoptera: Crambidae) por meio do parasitoide Cotesia flavipes (Cameron, 1891) (Hymenoptera: Braconidae) visando a redução de custos
(Universidade Federal de São Carlos, 2018-03-26)
Brazil is the world’s largest producer of sugarcane. However, this agricultural crop
is attacked by pests, especially Diatraea saccharalis. Its control in Brazil is carried out
mainly by the action of the caterpillar ...
Emaranhamento intrínseco em sistemas tipo-Dirac
(Universidade Federal de São Carlos, 2018-03-06)
Dirac equation is supported by a $SU(2) \otimes SU(2)$ group structure, such that its solutions describe two discrete degrees of freedom, intrinsic parity and spin, which in general are entangled. In this work we will ...
Termodinâmica de buracos negros de Schwarzschild
(Universidade Federal de São Carlos, 2018-05-28)
This dissertation consists of a review about some aspects of Schwarzschild black hole thermodynamics and includes a discussion related to the temporal evolution of the masses of these black holes in a thermodynamic context. ...