Buscar
Itens para a visualização no momento 1-7 of 7
Efeitos de frustração geométrica em antiferromagnetos desordenados com clusters
(Universidade Federal de Santa Maria, 2019-01-11)
In magnetic systems, frustration - which refers to the inhability to satisfy all the interactios
simultaneously - has ravealed a rich phenomenology. In particular, disorder and geometrical
features are possible sources ...
Efeitos de campos magnéticos aleatórios em sistemas de vidro de spin com clusters
(Universidade Federal de Santa Maria, 2019-03-08)
This work investigates the effects of the presence of random magnetic fields (RFs) in
thermodynamic quantities that characterize the spin glass state (VS). We adopt a cluster
spin model that considers long-range disordered ...
Estudo do desalinhamento entre os eixos de anisotropia via magnetorresistência anisotrópica em sistemas com exchange bias
(Universidade Federal de Santa Maria, 2019-11-28)
The Exchange Bias effect (EB) arises in systems with interfacial coupling, generally between
a ferromagnetic (FM) and a antiferromagnetic (AFM) material. The well-known manifestations
of this phenomenon are the field ...
Efeitos da hibridização no pseudogap em um modelo de Hubbard d-p
(Universidade Federal de Santa Maria, 2019-08-30)
In this paper, we investigate the effects of hybridization with different symmetries on
the normal and superconducting properties of a Hubbard d-p model. The Hubbard d-p model
is a variation of the model proposed by ...
Simulação numérica dos regimes da camada limite estável
(Universidade Federal de Santa Maria, 2019-11-11)
Recent studies have shown that the stable boundary layer (SBL) presents two distinct regimes.
In the weakly stable regime, turbulence is continous and similarity relationships are
valid, while in the very stable regime ...
Análise de agrupamentos a partir de parâmetros morfométricos para identificar classes morfológicas de galáxias
(Universidade Federal de Santa Maria, 2019-07-10)
To understand galaxies processes of formation and evolution, it is essential to identify properties
that allow their classification. It is common to perform this type of classification through
visual and individual ...
Supercondutividade na presença de correlações que podem gerar pseudogap
(Universidade Federal de Santa Maria, 2019-09-30)
Since the discovery of superconductivity at high temperatures in 1986, the problem
of correlations in superconductivity has received a lot of attention, but it remains as
an open problem in condensed matter physics. In ...