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71 papers · 1 filter
Competition among reputations in the 2D Sznajd model: Spontaneous emergence of democratic states
Nuno Crokidakis, Fabricio L. Forgerini
We propose a modification in the Sznajd sociophysics model defined on the square lattice. For this purpose, we consider reputation-a mechanism limiting the agents' persuasive power…
Helicoidal Fields and Spin Polarized Currents in CNT-DNA Hybrids
G. S. Diniz, A. Latgé, S. E. Ulloa
We report on theoretical studies of electronic transport in the archetypical molecular hybrid formed by DNA wrapped around single-walled carbon nanotubes (CNTs). Using a Green's fu…
The Disordered Induced Interaction and the Phase Diagram of Cuprates
E. V. L. de Mello, Raphael B. Kasal
There are processes in nature that resemble a true force but arise due to the minimization of the local energy. The most well-known case is the exchange interaction that leads to m…
Resistivity Calculations for Cuprate Superconductor Systems using an Electronic Phase Separation
C. F. S. Pinheiro, E. V. L. de Mello
The resistivity as function of temperature of high temperature superconductors is very unusual and despite its importance lacks an unified theoretical explanation. It is linear wit…
Effects of mass media on opinion spreading in the Sznajd sociophysics model
Nuno Crokidakis
In this work we consider the influence of mass media in the dynamics of the two-dimensional Sznajd model. This influence acts as an external field, and it is introduced in the mode…
Spin Currents in Metallic Nanostructures; Explicit Calculations
F. S. M. Guimarães, A. T. Costa, R. B. Muniz +1
In ultrathin ferromagnets deposited on metallic substrates, excitation of precessional motion of the spins produces a spin current in the substrate that transports angular momentum…