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Trasporto quantistico di spin in eterostrutture magnetiche
(Universita degli studi di Salerno, 2012-06-04)
In questa tesi abbiamo studiato il trasporto di spin polarizzato e la torsione
dello spin usando l’apporoccio della matrice di scattering secondo la teoria
di Buttiker, nel caso di barriere magnetiche finite sotto l'effetto ...
Dissipation, mixing and two level system in quantum field theory
(Universita degli studi di Salerno, 2012-04-30)
In this dissertation we discuss several aspects of a two level system (qubit) in the context of quantum mechanics and quantum field theory. The presence of geometrical phases in the evolution of a qubit state is shown. We ...
Interplay of spin-orbital correlations and structural distortions in Ru- and Cr- based perovskite systems
(Universita degli studi di Salerno, 2012-07-02)
The transition metal oxides are emerging as the natural playground where the intriguing effects
induced by electron correlations can be addressed. Since the s electron of the transition metals
are transferred to the ...
Nb nanoporous ultrathin films: matching effects and interconnected wires
(Universita degli studi di Salerno, 2012-03-03)
When the applied magnetic field is higher than the lower critical field but below
the upper critical field, a type-II superconductor allows magnetic flux to penetrate it
in the form of vortices, a tiny normal area ...
Electric transport properties of S/F hybrids: weak and inhomogenous ferromagnet
(Universita degli studi di Salerno, 2012-03-30)
Superconductivity (S) and ferromagnetism (F) are competing phases whose coexistence
is unlikely to occur. Exceptions require a non−uniform profile both for the pairing and the
magnetization, as in the case of the FFLO ...
Particle mixing, two level systems and gauge theory
(Universita degli studi di Salerno, 2012-04-26)
In this thesis I will discuss the theory of two level systems and the theory
of the oscillating particles in quantum eld theory.
In the rst chapter I will consider the time evolution of a two level system,
a qubit, ...
The ground deformations: tools, methods and application to some Italian volcanic regions
(Universita degli studi di Salerno, 2012-06-13)
The objective of this thesis is the study of slow deformation of the soil as a result of intrusion of magma
inside the magmatic chambers of some volcanoes located in Southern Italy. In particular, the Mt. Vesuvius
and ...
Magneto-transport properties of thin superconducting strips in the framework of Time Dependent Ginzburg Landau model
(Universita degli studi di Salerno, 2012-05-30)
This dissertation is addressed to summarize my experimental/phenomenological research
activities conducted at the laboratories of Physics Department, University of Salerno. The
experimental work consisted in the fabrication ...