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Hishiyama, N. ; Hoshino, M. ; Blanco Ramos, Francisco ; García, G. ; Tanaka, H. | American Institute of Physics | 2018-02-28As a sequel paper to our study of the elastic scattering for electron collisions with phosphorus trifluoride, PF? molecules, we report absolute inelastic differential and integral cross sections (DCS and ICS) of vibrational excitations for the c[...]texto impreso
Domínguez-Adame Acosta, Francisco ; Malyshev, Andrey ; Rodriguez, A. | American Institute of Physics | 2000-02-08We present results of numerical simulations of optical absorption line shape of Frenkel excitons in two-dimensional disordered lattices. Disorder is generated by Gaussian randomness in the molecular positions. The intersite interaction is consid[...]texto impreso
In this work, the ac admittance of a thick film nickel manganate spinel negative temperature coefficient thermistor ceramic system containing a glass phase is investigated. The dominating relaxation process is a grain boundary (GB) effect and ha[...]texto impreso
The dispersionless KP hierarchy is considered from the point of view of the twistor formalism. A set of explicit additional symmetries is characterized and its action on the solutions of the twistor equations is studied. A method for dealing wit[...]texto impreso
Balcells, Ll. ; Beltrán Finez, Juan Ignacio ; Martínez-Boubeta, C. ; Konstantinovi?, Z. ; Arbiol, J. ; Martínez, B. | American Institute of Physics | 2010-12-20In this work we report on the magnetic behavior of MgO thin films prepared by sputtering. A severe aging process of the ferromagnetic properties is detected in magnetic samples exposed to ambient atmosphere. However, ferromagnetism can be succes[...]texto impreso
AK Sco is a unique source: a 10-30 Myrs old pre-main sequence spectroscopic binary composed by two nearly equal F5 stars that at periastron are separated by barely eleven stellar radii so, the stellar magnetospheres fill the Roche lobe at perias[...]texto impreso
Ortega Villafuerte, Yanicet ; Fernández Sánchez, Paloma ; Piqueras de Noriega, Javier | American Institute of Physics | 2009-03-01Al doped ZnO arrays of nanoplates and of ordered nanoneedles have been grown by a thermal evaporation-deposition method. The nanoplates, which have mainly triangular shape. Interpenetrating triangles and crossing of the triangles with other plan[...]texto impreso
Through fractional calculus and following the method used by Dirac to obtain his well-known equation from the Klein-Gordon equation, we analyze a possible interpolation between the Dirac and the diffusion equations in one space dimension. We stu[...]texto impreso
Höft, Nicolas ; Horbach, Jürgen ; Martín Mayor, Víctor ; Seoane, Beatriz | American Institute of Physics | 2017-08-28We present a three-dimensional Ising model where lines of equal spins are frozen such that they form an ordered framework structure. The frame spins impose an external field on the rest of the spins (active spins). We demonstrate that this “poro[...]texto impreso
We analyze the band structure and interband optical transitions in a dangling backbone ladder DNA model. Using this model, semiconducting synthetic poly(G)- poly(C) DNA is studied by means of a tight-binding model traditionally used for transpor[...]texto impreso
Jaque, D. ; González Herrera, Elvira María ; Martín, J. I. ; Anguita,, J. V. ; Vicent López, José Luis | American Institute of Physics | 2002-10-07Arrays of submicrometric Ni lines have been fabricated in superconducting Nb films by electron beam lithography. In the mixed state, these arrays induce strong anisotropy in the dissipation behavior. The dissipation is reduced several orders of [...]texto impreso
Marín Palacios, Pilar ; Aragon, A.M ; Lieblich, M. ; Garcia Escorial, A. ; Crespo del Arco, Patricia ; Hernando Grande, Antonio | American Institute of Physics | 2012-07Magnetization curves of mixed Nb and FeSi based micrometric particles have been analyzed. The influence of the dispersion of Nb particles on the mixture remanence and coercivity has been studied above and below the Nb superconducting critical t[...]texto impreso
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Brandao Fischer, Bruno ; Cubitt, Toby S. ; Lucia, Ángelo ; Michalakis, Spyridon ; Pérez García, David | American Institute of Physics | 2015We prove an area law with a logarithmic correction for the mutual information for fixed points of local dissipative quantum system satisfying a rapid mixing condition, under either of the following assumptions: the fixed point is pure or the sys[...]texto impreso
González Herrera, Elvira María ; Villegas, J. E. ; Varela del Arco, María ; Santamaría Sánchez-Barriga, Jacobo ; Prieto, P. ; Schuller, Ivan K. ; Vicent López, José Luis | American Institute of Physics | 2002-05-27Bi_2Sr_2CaCu_2O_8, RBa_2Cu_3O_7 (R=Y, Eu) thin films and RBa_2Cu_3O_7/PrBa_2Cu_3O_7 superlattices have been fabricated by sputtering technique. The anisotropic dissipation was measured close to the critical temperatures with high applied magneti[...]
