Navegação por Assunto "Paramagnetismo"
Resultados 1-5 de 5
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Inverse melting and inverse freezing in a three-state spin-glass model with finite connectivity
(2013) [Artigo de periódico]The phase diagrams of the three-state Ghatak-Sherrington spin-glass (or random Blume-Capel) model are obtained in mean-field theory with replica symmetry in order to study the effects of a ferromagnetic bias and finite ... -
Kosterlitz-Thouless and Potts transitions in a generalized XY model
(2014) [Artigo de periódico]We present extensive numerical simulations of a generalized XY model with nematic-like terms recently proposed by Poderoso et al. [Phys. Rev. Lett. 106, 067202 (2011)]. Using finite size scaling and focusing on the q = 3 ... -
Nature of insulating state in the three-band hubbard model : a tight-binding approach
(1995) [Artigo de periódico]We study the three-band Hubbard model, commonly used to describe the copper-oxygen planes of high-Tc superconductors, from the point of view of electronic properties. Utilizing perturbation theory around the atomic limit ... -
Slicing the three-dimensional Ising model : critical equilibrium and coarsening dynamics
(2015) [Artigo de periódico]We study the evolution of spin clusters on two-dimensional slices of the three-dimensional Ising model in contact with a heat bath after a sudden quench to a subcritical temperature. We analyze the evolution of some simple ... -
Spin-glass freezing in Kondo-lattice compounds
(2001) [Artigo de periódico]A theory is presented that describes a spin-glass phase at finite temperatures in Kondo-lattice systems with an additional Ruderman–Kittel–Kasuya–Yosida interaction represented by long range, random couplings among localized ...
