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AuthorFraygola, Bárbara Maraston (2)Amorim, Cleber Alexandre de (1)Anjos, Rosana Aparecida dos (1)... View MoreSubject
Física da matéria condensada (39)
Ferroelétricos (5)Diodos de tunelamento ressonante (4)... View MoreDate Issued2010 - 2015 (24)2002 - 2009 (15)CNPq SubjectsCIENCIAS EXATAS E DA TERRA::FISICA (29)CIENCIAS EXATAS E DA TERRA::FISICA::FISICA DA MATERIA CONDENSADA (8)CIENCIAS EXATAS E DA TERRA::FISICA::FISICA DA MATERIA CONDENSADA::PROPRIEDADES TERMICAS DA MATERIA CONDENSADA (1)... View MoreGraduate ProgramPrograma de Pós-Graduação em Física - PPGF (39)Document TypeTese (26)Dissertação (13)

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Efeitos de spin em diodos de tunelamento ressonante tipo-p 

Galeti, Helder Vinicius Avanço (Universidade Federal de São Carlos, 2012-03-27)
In this work, we have investigated the spin effects in p-i-p GaAs/AlAs resonant tunneling diodes under magnetic field parallel to the tunnel current. The spin-dependent tunneling of carriers was studied by analyzing the ...
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Estudo sistemático das propriedades estruturais e magnéticas de amostras policristalinas do sistema PrxY1-xBa2Cu3O7-d 

Romano, Cecilia Stari (Universidade Federal de São Carlos, 2008-08-10)
One of the most studied high TC superconductor is the YBa2Cu3O7 (Y-123) as well as the different substitutions on the Y site for different rare earth elements. Generally, this does not show important effects on the magnetic ...
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Dielectric and elastic response of perovskites: modelling and simulation 

Jiménez, Rolando Placeres (Universidade Federal de São Carlos, 2013-09-09)
Nesta tese é estudada a resposta elástica e elétrica das perovskitas. As perovskitas são amplamente utilizadas em aplicações técnicas, sendo fundamental na eletrônica e no campo relativamente novo da nanoeletrônica. Elas ...
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Propriedades de transporte de spins polarizados em heteroestruturas semicondutoras 

Pacobahyba, Luiz Henrique (Universidade Federal de São Carlos, 2009-06-25)
In this work we used the technique of scattering matrix to calculate the transmissivity of polarized spins in a semiconductor symmetrical double-barrier heterostruture. The dynamics of carriers is described by effective ...
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Estrutura de platô na magnetização em modelos de spins frustrados 

Anjos, Rosana Aparecida dos (Universidade Federal de São Carlos, 2012-10-26)
This thesis study the phase transition, forms classical and quantum models of spin frustration. The Heisenberg model of spin 1/2 with exchange anisotropy with competitive interactions between first (J1) and second (J2) ...
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Processamento e propriedades do sistema ferroelétrico (Li,K,Na)(Nb,Ta)O3 dopado com CuO 

Zapata, Angélica Maria Mazuera (Universidade Federal de São Carlos, 2015-03-09)
The search for new lead-free piezoelectric materials has been a major goal of many scientists in recent years. The main cause is the replacement of widely used lead zirconate titanate (PZT) based ceramics due to the highly ...
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Efeito da modulação da topologia do confinamento em sistemas quase zero-dimensionais induzida por campo elétrico 

Oliveira, Edson Rafael Cardozo de (Universidade Federal de São Carlos, 2015-04-01)
Quantum dots grown by epitaxial techniques for optical and transport studies are usually capped by a layer of the same material on which the QDs were grown. Recently, several studies have shown how the growth parameters ...
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Optical and transport properties of p-i-n GaAs/AlAs resonant tunneling diode 

Awan, Iram Taj (Universidade Federal de São Carlos, 2014-05-26)
In this thesis, we have investigated the optical and transport properties of a p-i-n GaAs-AlAs resonant tunneling diode (RTD). The possibility of controlling and significantly varying the density of carriers accumulated ...
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Caracterização magnética de compósitos multiferróicos particulados Pb(Zr0,52Ti0,48)O4/CoFe2O4 

Jimenez, Korllvary Rhanddy Charles Parra (Universidade Federal de São Carlos, 2014-08-26)
This work was studied the magnetic and electrical properties of particulate multiferroic composite Pb (Zr0,52Ti0,48) O4 / CoFe2O4 (PZT / CFO) (0-3 type) prepared by the polymeric method of Pechini and sintered by ultra-rapid ...
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Efeitos eletrônicos, elásticos e estruturais em sistemas semicondutores nanoscópicos 

Cesar, Daniel Ferreira (Universidade Federal de São Carlos, 2012-02-16)
The present work aims the study of electronic, elastic and structural properties of a whole class of nanoscopic semiconductors systems, which include quasi-two-dimensional, one-dimensional and zero-dimensional confined ...
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