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American Institute of Physics |
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We study the strange and non-strange quark mass dependence of the parameters of the f_0(600), ?(800), ?(770) and K*(892) resonances generated from elastic meson-meson scattering using unitarized one-loop Chiral Perturbation Theory. We fit simult[...]texto impreso
Nogales Díaz, Emilio ; Martin, R. V. ; O'Donnell, K. P. ; Lorenz, K. ; Alves, E. ; Ruffenach, S. ; Briot, O. | American Institute of Physics | 2006-01-16The structural properties of nanometric AlN caps, grown on GaN to prevent dissociation during high temperature annealing after Eu implantation, have been characterized by scanning electron microscopy and electron probe microanalysis. The caps pr[...]texto impreso
Piqueras de Noriega, Javier ; Alemán Llorente, Belén ; Ortega Villafuerte, Yanicet ; García Martínez, José Ángel | American Institute of Physics | 2011-07-01Fe dopedZnO nanowires,nanorods, and urchin-like nanostructures have been grown using an evaporation-deposition method with compacted mixtures of ZnS and Fe_2O_3 powders, with different Fe contents as precursors. Treatments at 950 °C under argon [...]texto impreso
Martínez Matos, Óscar ; Hernández Garay, María de la Paz ; Izquierdo, J. G. ; Vaveliuk, Pablo ; Bañares Morcillo, Luis ; Calvo Padilla, María Luisa | American Institute of Physics | 2014-07-28A procedure to characterize the induced damage and the incubation effects in volume transmission gratings under femtosecond laser pulse train illumination is presented. It was also developed a formalism that explains the damage processes. Our pr[...]texto impreso
Dhar, S. ; Kammermeier, T. ; Ney, A. ; Pérez García, Lucas ; Ploog, K. H. ; Melnikov, A. ; Wieck, A. D. | American Institute of Physics | 2006-08-07The structural and the magnetic properties of Gd-focused ion-beam-implanted GaN layers are studied. Gd^(3+) ions were uniformly implanted in molecular beam epitaxy rown GaN layers at room temperature with an energy of 300 keV at doses ranging f[...]texto impreso
Quesada, A. ; García, M. A. ; Andrés, M. ; Hernando Grande, Antonio ; Fernandez, J. F. ; Caballero, A. C. ; Martín González, M. S. ; Briones, F. | American Institute of Physics | 2006-12The origin of ferromagnetism in diluted magnetic semiconductors is still an open question, yielding a great deal of research across the world. This work focuses on the Co-Zn-O system. Room-temperature ferromagnetism is observed after a partial r[...]texto impreso
Fernández Pérez, Luis Antonio ; Martín Mayor, Víctor ; Verrocchio, P. | American Institute of Physics | 2006We report clear finite size effects in the specific heat and in the relaxation times of a model glass former at temperatures considerably smaller than the Mode Coupling transition. A crucial ingredient to reach this result is a new Monte Carlo a[...]texto impreso
Fernández Pérez, Luis Antonio ; Gordillo Guerrero, A. ; Martín Mayor, Víctor ; Ruiz Lorenzo, J. J. | American Institute of Physics | 2008We present a detailed numerical study on the effects of adding quenched impurities to a three dimensional system which in the pure case undergoes a strong first order phase transition (specifically, the ferromagnetic/paramagnetic transition of t[...]texto impreso
A deep analysis of the current-voltage (I-V) characteristics of YBa2Cu3O7 grain boundary Josephson junctions (GBJJs) allows us to go much farther than the usual calculus of the transport parameters. It is possible to construct a structural image[...]texto impreso
Ruiz Gómez, Sandra ; Serrano, A. ; Carabias,, I. ; Garc?a, M. A. ; Hernando Grande, Antonio ; Mascaraque Susunaga, Arantzazu ; Pérez García, Lucas ; González Barrio, Miguel Ángel ; Rodríguez de la Fuente, Óscar | American Institute of Physics | 2017-02-27We have used a low-energy ion bombardment to fabricate an epitaxial single-crystalline magnetite/hematite bilayer grown on Au(111). This non-conventional fabrication method involves the transformation of the upper layers of a single-crystalline [...]texto impreso
Llanes Estrada, Felipe José ; Cotanch, Steve ; General, Ignacio ; Wang, Ping | American Institute of Physics | 2008The Franck-Condon principle governing molecular electronic transitions is utilized to study heavy-quark hadron decays. This provides a direct assessment of the wavefunction of the parent hadron if the momentum distribution of the open flavor dec[...]texto impreso
Inspired by the results of Jonas, Einsenhart, Demoulin, and Bianchi on the permutability property of classical geometrical transformations of conjugate nets and its reductions-of pseudo-orthogonal, pseudo-symmetric, and pseudo-Egorov types-dress[...]texto impreso
The paper presents some basic facts concerning the formulation of the gauge invariance property of the electromagnetic field in terms of differentiable manifolds. For example, the gauge potentials are identified as differential one-forms on the [...]texto impreso
We propose an algorithm for the reduction of observational noise in chaotic multivariate time series. The algorithm is based on a maximum likelihood criterion, and its goal is to reduce the mean distance of the points of the cleaned time series [...]texto impreso
A modification of Weyl's theory of the electromagnetic field is presented, such that the usual gravitational Lagrangian becomes invariant under the corresponding definition of gauge transformation. As another advantage the problem of the we[...]