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Magnetoplasmons no sistema de elétrons superficiais sobre hélio líquido confinado em um canal parabólico
(Universidade Federal de São Carlos, 2003-04-15)
A lot of experimental and theoretical work have been performed in order to understand the collective modes of two-dimensional electron system (2DES) confined to restricted geometries. In particular, the system of surface ...
Interação da matéria de vórtices com estruturas de defeitos : detecção das primeiras penetrações
(Universidade Federal de São Carlos, 2009-08-07)
This thesis results from a systematic study of the interactions between penetrated vortices and pinning centers carried out on structured superconductors films of YBCO, Nb and Pb. A regular array of pinning centers (antidots, ...
Simulação por dinâmica molecular de óxidos alcalino-terrosos
(Universidade Federal de São Carlos, 2006-05-04)
The main subject of this work is to simulate structural and dynamical properties
of MeO type alkaline-earth oxides, where Me is an element of the family 2 (Me = Ca,
Sr and Ba). The use of the Molecular Dynamics method (MD) ...
Estudo das transições de fase em cerâmicas ferroelétricas de PZT e PLZT através de espectroscopia mecânica
(Universidade Federal de São Carlos, 2008-10-08)
Lead titanate zirconate (PZT) and lanthanum-modified lead titanate zirconate (PLZT) ferroelectric ceramics have been great scientific and technologic interest, due to the possibility
of your physics properties can be ...
Fases geométricas e invariantes dinâmicos em mecânica quântica
(Universidade Federal de São Carlos, 2007-05-16)
The increasing interest to understand the geometric phases (mainly due to the possi-
bility to achieve geometric quantum computation robust against some kind of errors) and
the search for new techniques to solve time-dependent ...
Sistemas eletrônicos em duas dimensões : desordem e resposta dinâmica
(Universidade Federal de São Carlos, 2009-01-28)
In disordered systems the pinning strength on the carriers due to impurities or defects is one of the most important mechanisms that produce insulator behavior. A transition to a metal phase should occur if a driving field ...
Engenharia de interações e de reservatórios
(Universidade Federal de São Carlos, 2008-05-17)
In this work we first present a protocol to build effective interactions between two cavity modes, considering a two-level atom under the action of classical fields. Bilinear Hamiltonians associated with parametric up- and ...
Ordenamento ferromagnético em poli(3-hexiltiofeno) à temperatura ambiente
(Universidade Federal de São Carlos, 2009-07-14)
In this work we present, for the first time, a systematic study of magnetic properties of an alkyl derivative of thiophene: the poly(3-hexylthiophene) prepared in acetonitrile. This polymer was investigated in different ...
Processos quânticos em cavidades com a geometria variável.
(Universidade Federal de São Carlos, 2004-03-11)
In this thesis, we study the quantum de ection of ultracold particles by mirrors, the shrinking of free wave packets, the tunnelling of narrow Gaussian packets through delta potentials and the entanglement between the modes ...
O papel da interação elétron-elétron no regime Hall quântico interio.
(Universidade Federal de São Carlos, 2004-04-02)
Experimental and theoretical studies of the aspects of particle-like and collective behavior
of electrons in the proximity of the edges of two-dimensional (2DES) and quasi-one-dimensional
(Q1DES) systems, named quantum ...