Browsing by Author "Kiwi Tichauer, Miguel"
Now showing items 1-20 of 29
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(1973)Energy gaps near the Fermi surface arising from magnetic Brillouin zone effects must be taken into account in order to understand the antiferromagnetism of europium metal. © 1973 Pergamon Press.
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(ACS Publications, 2013-02-28)The dynamics of the collision process of a titanium dimer against a C-20 nanocluster in the bowl configuration is simulated by means ab initio molecular dynamics, focusing our interest on the first steps to synthesize ...
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(2013)The dynamics of the collision process of a titanium dimer against a C 20 nanocluster in the bowl configuration is simulated by means ab initio molecular dynamics, focusing our interest on the first steps to synthesize ...
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(AMER INST PHYSICS, 2006-12-07)An alternative strategy to find the minimal energy structure of nanoclusters is presented and implemented. We use it to determine the structure of metallic clusters. It consists in an unbiased search, with a global minimum ...
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(Elsevier, 2014)The melting and soldering processes of two iron filled carbon nanotubes is explored by means of classical molecular dynamics, in order to develop an understanding of the underlying mechanisms that govern the dynamics of ...
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(Royal Soc Chemistry, 2015)The planar to three dimensional transition of Au13-nAgn clusters is investigated. To do so the low lying energy configurations for all possible concentrations (n values) are evaluated. Many thousands of possible conformations ...
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(Elsevier, 2013)
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(Elsevier, 2014)We simulate traffic in a city by means of the evolution of a row of interacting cars, using a cellular automaton model, in a sequence of traffic lights synchronized by a ‘‘green wave’’. When our initial condition is a ...
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(American Physical Society, 2015)© 2015 American Physical Society.Multiferroic materials are mostly antiferromagnets, often containing incommensurate magnetic arrangements stemming from the magnetoelectric interaction. Using soft x-ray resonant magnetic ...
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(2009)The determination of the spatial distributions that atoms adopt to form condensed matter is a problem of crucial importance, since most physical properties depend on the atomic arrangement. This is especially relevant for ...
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(EPL, 2014)The inclusion of a Dzyaloshinskii-Moriya short-range antisymmetric interaction in the Heisenberg Hamiltonian induces spontaneous magnetization, at nonzero temperatures, in one and two dimensions. It is shown that quantum ...
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(1974)The effects of localized spin fluctuations on the critical temperature Tc and the specific-heat jump Δ C (Tc) of dilute superconducting alloys is investigated, both in the weak and strong magnetic limits. In the weak ...
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(1991)The electron-phonon interaction in mixed-valence systems is modeled on the basis of an Anderson-like Hamiltonian that describes a cluster of one metallic rare-earth cation surrounded by six anions. Coupling between the ...
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(1972)The model recently proposed by Ramírez and Falicov is generalized by the incorporation of the spin-orbit splitting of the 4f shell. This generalization provides an understanding of the fractional valence and magnetic ...
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(1972)In terms of the usual RKKY indirect exchange interaction, the spiral antiferromagnetic phase of Europium cannot be attributed to a 'nesting' of opposite faces of the tetracube portion of the Fermi surfaces. © 1972.
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(1990)The impurity-induced grain-boundary decohesion is investigated on the basis of a three-dimensional-model calculation. The grain boundary is simulated by self-consistently modifying the hopping integrals between two neighboring ...
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(1972)The problem of energy propagation through a one-dimensional open-ended finite chain is critically reexamined. Free end boundary conditions are imposed and quantum-field-theory operators, consistent with these boundary ...
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(1974)The effects due to localized spin fluctuations (LSF) in dilute superconducting alloys are investigated. Expressions for the critical temperature Tc as function of impurity concentration nI and the specific heat jump at the ...
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(1989)The magnetization of thin ferromagnetic metal slabs deposited on a paramagnetic metal substrate is investigated by means of a model calculation. The magnetic behavior of the system is described by a single-site Hubbard ...
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(1989)Many natural phenomena are governed by nonlinear recursive relations of the type xt+1=f(xt), where f does depend on t. We focus our interest on the particularly simple case xt+1=rtxt(1-xt), where rt adopts either periodically ...
