Mesoscopic Physics
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Nonadditive entropy and nonextensive statistical mechanics -an overview after 20 years
Statistical mechanics constitutes one of the pillars of contemporary physics. Recognized as such - together with mechanics (classical, quantum, relativistic), electromagnetism and thermodynamics -, it is one of the mandatory theories studied at virtually all the intermediate-and advanced-level courses of physics around the world. As it normally happens with
Brazilian Journal of Physics. Publicado em: 2009-08
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2. Transporte em nanoestruturas: mÃtodos de movimento Browniano e teoria de circuitos
The results presented in this thesis can be divided into two parts. In the first one we study a class of Brownian motion ensembles (BME) obtained from the general theory of matricial Markovian stochastic processes of random matrix theory. The ensembles are characterized by a Fokker-Planck equation and are closely related to Hamiltonians of Calogero-Sutherlan
Publicado em: 2006
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3. Tunelamento e transporte quantico em sistemas mesoscopicos : fundamentos e aplicações
O interesse atual e crescente nos sistemas mesoscópicos se deve à miniaturização cada vez maior dos dispositivos eletrônicos e à produção de materiais com possibilidade de armazenar informação em altas densidades (Gbits e Terabits/pol 2 ). A Física Mesoscópica descreve fenômenos que ocorrem em uma escala de tamanhos intermediária entre o macros
Publicado em: 2005
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4. Bilhares quanticos como modelo para um gas mesoscopico magnetizado
During the last years, mesoscopic systems have been attracting much interest in Theoretical Physics, due to the implementation of important theories in this field such as the semiclassical theory of periodic, classical, orbits. The recent progresses in experimental techniques, in semiconductor materials, showed that the manipulation of real systems with as f
Publicado em: 1998
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5. Stochastic and mesoscopic models for tropical convection
A new way to parametrize certain aspects of tropical convection through stochastic and mesoscopic models is developed here. The technical idea is to adapt tools from statistical physics and materials science to model important unresolved features of tropical convection. This new strategy consists of modeling the unresolved effects of convective inhibition in
The National Academy of Sciences.
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6. Ultrafast dynamics of many-body processes and fundamental quantum mechanical phenomena in semiconductors
The large dielectric constant and small effective mass in a semiconductor allows a description of its electronic states in terms of envelope wavefunctions whose energy, time, and length scales are mesoscopic, i.e., halfway between those of atomic and those of condensed matter systems. This property makes it possible to demonstrate and investigate many quantu
The National Academy of Sciences.